[Event "WWoE Jamboree 2025: U14____________________"]
[Site "https://lichess.org/study/khPVCJwn/ONn68raM"]
[Result "*"]
[Variant "Standard"]
[ECO "?"]
[Opening "?"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "U14____________________"]
[UTCDate "2025.01.13"]
[UTCTime "20:16:30"]

 *


[Event "WWoE Jamboree 2025: Vincent Dong -- Alexis Malibiran"]
[Site "https://lichess.org/study/khPVCJwn/9xgGvCDi"]
[Result "0-1"]
[Variant "Standard"]
[ECO "B27"]
[Opening "Sicilian Defense: Hyperaccelerated Dragon"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Vincent Dong -- Alexis Malibiran"]
[UTCDate "2025.01.13"]
[UTCTime "20:23:40"]

{ In a game featuring a slightly unusual IQP position, you lost hold of your central pawn and that in the end was most of the story of the game, with black converting the pawn ending. The moral of this story is: avoid pure king and pawn endgames when you are behind. }
1. e4 { [%eval 0.18] } 1... c5 { [%eval 0.25] } 2. Nf3 { [%eval 0.2] } 2... g6 { [%eval 0.34] } (2... Nc6 3. d4 cxd4 4. Nxd4 g6 { Do you play this position as white?
If so I suggest you head for it directly because black can't avoid it without danger }) 3. c3 { [%eval 0.24] } (3. d4 { Now black can try and avoid cxd4, but I've looked long and hard at these options and I don't trust them: } 3... Bg7!? 4. dxc5 { This is quite dangerous for black } 4... Nf6 (4... Qa5+ 5. c3 Qxc5 6. Na3 Nf6 7. Nb5 $16) 5. Nc3 Qa5 6. e5 Ne4 7. Qd4 Nxc3 8. Bd2 Nb5 9. Qh4 Qc7 10. Bxb5 Nc6 11. O-O-O $18 { Shaw, John K - Epishin, Vladimir, 1-0, Groningen op, 1999, https://lichess.org/wnEn4HIb }) 3... Bg7 { [%eval 0.63] } 4. d4 { [%eval 0.47] } 4... cxd4 { [%eval 0.5] } 5. cxd4 { [%eval 0.48] } 5... d5 { [%eval 0.49] } 6. exd5 { [%eval 0.0] } 6... Qxd5 { [%eval 0.37] } (6... Nf6 $10 { This is supposed to be the best move according to theory when the main line goes } 7. Bb5+ Nbd7 8. Nc3 O-O 9. d6! (9. O-O Nb6 { when black has good prospects against the IQP }) 9... exd6 10. O-O a6 11. Bd3 Nb6 12. a4 Nbd5 13. Nxd5 Nxd5 14. Qb3 Be6 15. Qxb7? Rb8 16. Qc6 { Black has a draw if they want it but can play for more } 16... Rc8 (16... Rb3) (16... Nb4)) 7. Nc3 { [%eval 0.41] } 7... Qd8 { [%eval 0.38] } { With an isolated queen pawn position.
it's less usual to get one with a fianchettoed black Bishop and that probably means you need your light squared Bishop on c4 and not d3. } 8. Be2 { [%eval 0.29] } { Perhaps a bit cautious } (8. Bc4) (8. d5) 8... Nf6 { [%eval 0.25] } 9. O-O { [%eval 0.25] } 9... O-O { [%eval 0.19] } 10. h3?! { [%eval -0.02] } { Meek } (10. Bg5) (10. Qb3) (10. d5) 10... Nc6 { [%eval -0.02] } 11. d5!? { [%eval 0.04] } { I guess the IQP has a choice about whether to be weak on d5 or Dd4. Certainly the pawn push disrupts black's development and gives you more space; it also gets the pawn off the diagonal of the black Bishop. } 11... Nb4 { [%eval 0.08] } 12. Bc4 { [%eval 0.0] } 12... Bf5 { [%eval 0.27] } 13. Nd4 { [%eval 0.18] } (13. a3!? Qc7 14. Bb3 Nd3 15. g4 Nxc1 16. Rxc1 Bd7 17. Re1 Qf4 $10) 13... Be4 $14 { [%eval 0.31] } { The pressure on d5 is building up and it now looks as though it's going to be taken. I think it's clear that this position is crucial and it was well worth spending time with— which you may have done. } 14. Re1? $17 { [%eval -0.93] } { Mistake. Qb3 was best. } { Now black goes a pawn ahead } (14. Qb3! $14 { and the pawn escapes capture because of } 14... Qb6 (14... Nbxd5?? 15. Nxe4) 15. Be3 Bxd5 16. Nf5 Qc7 17. Nxd5 Nbxd5 18. Bxd5 Nxd5 19. Qxd5 Rfd8 20. Rfc1 $14 Rxd5 21. Rxc7 gxf5 22. Rxb7 $14) 14... Bxd5 $17 { [%eval -0.93] } 15. Bxd5?! $19 { [%eval -1.91] } { Inaccuracy. Bf1 was best. } 15... Nfxd5 { [%eval -1.83] } 16. a3 $19 { [%eval -2.32] } 16... Bxd4? $17 { [%eval -0.59] } { Mistake. Nxc3 was best. } (16... Nxc3 { was an opportunity to make a further weakness in the white position. }) 17. Qxd4 { [%eval -0.65] } 17... Nc2 { [%eval -0.76] } { ...with a family fork, winning the exchange. This must have been satisfying but white seems to get very good compensation. } 18. Qxd5?! { [%eval -1.71] } { Inaccuracy. Qe4 was best. } 18... Nxe1? $15 { [%eval -0.26] } { Mistake. Qxd5 was best. } 19. Bh6?? $19 { [%eval -2.02] } { Blunder. Qe4 was best. } (19. Qe4! $15 { Is the right move here; the knight has to go to d3 } 19... Nd3 20. Bh6! { Recovers the exchange because } 20... Re8?? 21. Rd1 $18 { and white is actually winning }) 19... Nc2 { [%eval -2.05] } { Now the black knight is able to escape } 20. Rc1 { [%eval -2.15] } 20... Nd4 { [%eval -2.09] } 21. Rd1 $19 { [%eval -2.08] } 21... Nf5? $15 { [%eval -0.4] } { Mistake. Qxd5 was best. } { So for the next few moves I'm absolutely confident I've got the move order wrong but I can't reconstruct the correct move order from the score sheet. The pieces do end up on the right squares but I find it hard to believe that the sequence that I have here is the right one. } 22. Bxf8?! { [%eval -1.19] } { Inaccuracy. Qb3 was best. } 22... Kxf8?? { [%eval 6.64] } { Blunder. Qxd5 was best. } 23. Qxd8+ { [%eval 6.51] } 23... Rxd8 { [%eval 6.39] } 24. Kf1?? { [%eval -2.34] } { Blunder. Rxd8+ was best. } 24... Rxd1+ { [%eval -2.23] } 25. Nxd1 { [%eval -2.27] } 25... e6 { [%eval -2.2] } 26. Ke2 { [%eval -2.04] } 26... Ke7 $19 { [%eval -2.16] } { White is in a lot of trouble here but you only make it worse by swapping off your last piece. Endgames with only kings and pawns are usually very straightforward and decided as a win or a draw very quickly; they give you very little chance to make trouble if you are on the losing end of things. } 27. Ne3?! { [%eval -3.45] } { Inaccuracy. Kd3 was best. } 27... Nxe3 { [%eval -3.54] } 28. Kxe3 { [%eval -3.48] } { Now I don't think anything can be done black plays the remaining moves accurately and white goes down without being able to put up much of a fight } 28... Kd6 { [%eval -3.43] } 29. Kd4 { [%eval -3.59] } 29... e5+ { [%eval -3.55] } 30. Kc4 { [%eval -3.66] } 30... Kc6 { [%eval -3.72] } 31. h4 { [%eval -3.79] } 31... f5 { [%eval -3.73] } 32. g3 { [%eval -3.89] } 32... h6 { [%eval -4.04] } 33. b3 { [%eval -4.38] } 33... a6 { [%eval -4.17] } 34. f3?! { [%eval -5.29] } { Inaccuracy. Kd3 was best. } 34... h5 { [%eval -4.68] } 35. Kc3 { [%eval -5.5] } 35... Kc5 { [%eval -5.43] } 36. Kc2 { [%eval -6.18] } 36... Kd4 { [%eval -6.02] } 37. Kd2 { [%eval -6.0] } 37... a5 { [%eval -7.17] } 38. a4 { [%eval -8.25] } 38... b6 { [%eval -7.67] } 39. Kc2 { [%eval -8.96] } 39... Ke3 { [%eval -8.77] } 40. Kc3 { [%eval -11.39] } 40... Kxf3 { [%eval -10.48] } 41. b4 { [%eval -11.31] } 41... e4 { [%eval -11.03] } 42. Kc4 { [%eval -10.53] } 42... e3 { [%eval -11.59] } 43. Kb5 { [%eval -12.09] } 43... axb4 { [%eval -10.96] } 44. Kxb6?! { [%eval #-10] } { Checkmate is now unavoidable. Kxb4 was best. } 44... e2 { [%eval #-9] } 0-1


[Event "WWoE Jamboree 2025: Vincent Dong -- Emma Kong"]
[Site "https://lichess.org/study/khPVCJwn/MVqjAIXS"]
[Result "0-1"]
[Variant "Standard"]
[ECO "C77"]
[Opening "Ruy Lopez: Morphy Defense, Anderssen Variation"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Vincent Dong -- Emma Kong"]
[UTCDate "2025.01.13"]
[UTCTime "20:18:14"]

{ This was unlucky in more than one respect. Black got more material and more compensation for the lost piece then they should have done, and in fact had a period when they were winning, despite the missing piece. But you pulled it right round reaching a winning Rook end game only for disaster to strike. }
1. e4 { [%eval 0.18] } 1... e5 { [%eval 0.21] } 2. Nf3 { [%eval 0.13] } 2... Nc6 { [%eval 0.17] } 3. Bb5 { [%eval 0.08] } 3... a6 { [%eval 0.21] } 4. Ba4 { [%eval 0.27] } 4... Nf6 { [%eval 0.18] } 5. d3 { [%eval 0.04] } 5... b5 { [%eval 0.12] } 6. Bb3 { [%eval 0.02] } 6... Bc5 { [%eval 0.0] } 7. Nc3 { [%eval 0.0] } 7... h6 { [%eval 0.02] } 8. O-O { [%eval 0.01] } 8... O-O { [%eval 0.13] } 9. Nd5 { [%eval 0.17] } 9... d6 { [%eval 0.16] } 10. c3 $10 { [%eval 0.21] } 10... a5?! $16 { [%eval 0.77] } { Inaccuracy. Rb8 was best. } (10... Rb8 { Carlsen, M. - Giri, A., 1/2-1/2, 4th Norway Chess 2016, https://lichess.org/OdfS3iBg }) 11. h3?! $10 { [%eval -0.08] } { Inaccuracy. d4 was best. } (11. d4 Ba7 12. Nxf6+ Qxf6 13. Bd5 Bd7 $14) 11... Be6?? $18 { [%eval 2.31] } { Blunder. a4 was best. } { Losing a piece because of the threat of d4-d5. } 12. d4 { [%eval 2.29] } 12... Nxe4?! { [%eval 2.22] } 13. dxc5 { [%eval 2.21] } 13... Nxc5 $18 { [%eval 2.31] } { Now the task is to win a won game. } 14. Ne3?? $14 { [%eval 0.53] } { Blunder. Bc2 was best. } (14. Bc2 $18 { I would be much less free with my Bishop! }) 14... Nxb3 { [%eval 0.61] } 15. axb3 $14 { [%eval 0.61] } { Now Black correctly tries to make the most of their central pawns. } 15... d5? $18 { [%eval 2.1] } { Mistake. f5 was best. } 16. b4?! $16 { [%eval 1.25] } { Inaccuracy. Re1 was best. } 16... axb4 { [%eval 1.43] } 17. Rxa8 { [%eval 1.37] } 17... Qxa8 { [%eval 1.42] } 18. cxb4 { [%eval 1.19] } 18... f6?! $18 { [%eval 1.96] } { Inaccuracy. d4 was best. } 19. Nc2? $14 { [%eval 0.48] } { Mistake. Nh4 was best. } (19. Nh4! Nxb4 20. Nef5! { makes good use of the Knights, which turn out to be clumsy in defence. }) 19... Qa4?! $16 { [%eval 1.42] } { Inaccuracy. d4 was best. } 20. Bd2 { [%eval 1.28] } 20... Qb3 $16 { [%eval 1.48] } 21. Na1? $10 { [%eval 0.11] } { Mistake. Na3 was best. } { Black has equal chances; White's pieces lack scope. } 21... Qxd1?! { [%eval 0.83] } { Inaccuracy. Qxb2 was best. } 22. Rxd1 $16 { [%eval 0.75] } 22... e4? $18 { [%eval 2.25] } { Mistake. Ra8 was best. } 23. Ne1? $14 { [%eval 0.51] } { Mistake. Rc1 was best. } { These Knights on the rim are indeed grim. } (23. Rc1! Bd7 24. Ne1 d4 25. Nb3 $18 { The pawns are more under your eye and your pieces are more active. }) 23... d4 { [%eval 0.42] } 24. Rc1 { [%eval 0.57] } 24... Ne5 $16 { [%eval 0.7] } 25. Bf4?! $10 { [%eval -0.01] } { Inaccuracy. Rxc7 was best. } 25... Nc4? $18 { [%eval 1.43] } { Mistake. d3 was best. } 26. b3? $14 { [%eval 0.2] } { Mistake. Nec2 was best. } 26... g5?! $18 { [%eval 1.24] } { Inaccuracy. Ne5 was best. } 27. bxc4? $10 { [%eval 0.02] } { Mistake. Bxc7 was best. } 27... gxf4 { [%eval 0.0] } 28. c5?? $19 { [%eval -2.42] } { Blunder. Nb3 was best. } { You're dicing with death now: Black's pawns are very dangerous. } (28. Nb3 d3 29. Nc5 d2 30. Rd1 dxe1=Q+ 31. Rxe1 Bxc4 32. Rxe4 $10) 28... d3 { [%eval -2.31] } 29. Rd1?! { [%eval -3.32] } { Inaccuracy. g3 was best. } { Rooks are generally even worse at defence than Knights; it's impossible for them not to lose scope. } 29... Ra8 { [%eval -3.51] } 30. f3 { [%eval -3.55] } 30... e3?? { [%eval 0.0] } { Blunder. f5 was best. } 31. Nac2?? { [%eval -4.97] } { Blunder. Nxd3 was best. } (31. Nxd3 Rd8 32. Nc2 Bb3 33. Nb2 Rxd1+ 34. Nxd1 Bxc2 35. Nc3 Bd3 $10) 31... Bc4?? $18 { [%eval 2.5] } { Blunder. d2 was best. } 32. Nd4?? $19 { [%eval -4.9] } { Blunder. Nxd3 was best. } { I think this game had a unhappy end: the pawns and the Bishop got swapped off for the two nights leaving a Rook and pawn end game and you were able to get to a position where your pawn would queen first, and you did promote it -- but on the move that you made queening the pawn you were in check, and it was that was your second illegal move, and so your opponent claimed the game and won.
That's just a wretched thing to happen and I'm sad for you.
Anything to learn from it? Your opponent was in radical time trouble but you were not. If you are winning and your opponent is in time trouble, IGNORE IT. You've got no obligation to move as fast as your opponent does and if you've got time, you must continue to check things. Go through all the usual sorts of routines as if your opponent was not in time trouble.
It's not really giving your opponent a chance to turn the game around if you're winning and you make sure you win. } 32... d2 33. Nec2 0-1


[Event "WWoE Jamboree 2025: Govind Anandkumar -- Vincent Dong"]
[Site "https://lichess.org/study/khPVCJwn/6r4oPuLy"]
[Result "1/2-1/2"]
[Variant "Standard"]
[ECO "B22"]
[Opening "Sicilian Defense: Alapin Variation, Barmen Defense"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Govind Anandkumar -- Vincent Dong"]
[UTCDate "2025.01.13"]
[UTCTime "20:11:35"]

{ You will never significantly worse in this game and when the draw was agreed you actually stood a little better. }
1. e4 { [%eval 0.18] } 1... c5 { [%eval 0.25] } 2. c3 { [%eval 0.0] } 2... d5 { [%eval 0.16] } (2... Nf6) 3. exd5 { [%eval 0.12] } 3... Qxd5 { [%eval 0.19] } 4. d4 { [%eval 0.13] } 4... Nc6 { [%eval 0.21] } 5. Nf3 { [%eval 0.11] } 5... cxd4 { [%eval 0.36] } { This move must be played in association with a definite plan, or else you are giving the Nb1 a nice square on c3 for no good reason. Alternatives: } (5... Nf6!? 6. Be2 (6. Be3 Bg4 7. dxc5 e6 $14) 6... e6 7. O-O cxd4 8. cxd4 Qd6 $10 9. Na3 Be7 10. Nb5 Qd8 11. Bf4 Nd5 12. Bg3 a6 13. Nc3 O-O { Pavasovic, Dusko - Balogh, Csaba, 0-1, CRO-chT, 2007, https://lichess.org/Y8kZWfx9 }) (5... Bg4!? 6. Be2 { Mamedov, Rau - Polgar, Ju, 0-1, FIDE World Rapid 2014, https://lichess.org/3MLDiYTY } (6. dxc5 { Zhigalko, S. - Al Modiahki, M., 0-1, FIDE World Blitz 2014, https://lichess.org/JArOG0te })) 6. cxd4 { [%eval 0.2] } 6... e6 $14 { [%eval 0.41] } { The better plans are: } (6... e5! 7. Nc3 Bb4 8. Bd2 Bxc3 9. Bxc3 e4 10. Ne5 Nxe5 11. dxe5 Ne7 $14) (6... Bg4!? 7. Nc3 (7. Be2 Bxf3 (7... e6 8. Nc3 Bb4 9. O-O Qa5 10. a3 Bxc3 11. bxc3 Nf6 $14) 8. Bxf3 $16 Qxd4?? 9. Bxc6+ $18) 7... Bxf3 8. gxf3 Qxd4 9. Qxd4 Nxd4 10. Nb5 Nc2+ 11. Kd1 Nxa1 12. Nc7+ Kd7 13. Nxa8 $14) 7. Nc3 { [%eval 0.3] } 7... Qd8 { [%eval 0.42] } 8. Bd3 { [%eval 0.4] } 8... Nf6 { [%eval 0.55] } 9. O-O { [%eval 0.39] } 9... Be7 { [%eval 0.44] } 10. Bf4 { [%eval 0.39] } 10... a6 { [%eval 0.52] } { That makes sense only if you plan ...b5, because Nb5 is not a threat. } (10... O-O! 11. Nb5?! a6! (11... Nd5!)) 11. Re1 { [%eval 0.52] } 11... O-O $16 { [%eval 0.68] } { A fairly normal IQP position; Black's position isn't quite as settled as it could be. } 12. Bc2?! $10 { [%eval -0.12] } { Inaccuracy. Rc1 was best. } (12. Rc1) 12... Bd7?! $14 { [%eval 0.61] } { Inaccuracy. Nb4 was best. } (12... Nb4 13. Bb1 b5) (12... b5) 13. Bg5 { [%eval 0.16] } 13... Nb4 { [%eval 0.26] } 14. Bb3 { [%eval 0.35] } 14... Bc6 { [%eval 0.37] } 15. a3 { [%eval -0.03] } 15... Nbd5 { [%eval 0.12] } 16. Qd3 { [%eval 0.0] } 16... h6 { [%eval -0.14] } 17. Bh4 { [%eval -0.49] } 17... Nf4 { [%eval -0.52] } 18. Qe3 $15 { [%eval -0.5] } { Draw agreed. } 18... Qb6 19. Bc2 N6d5 20. Qe4 Ng6 $15 { I can understand that you wanted to settle yourself and get some sort of result after the disappointments in the previous two rounds, but in fact black stands quite well here and has most of the chances.
I don't see that white is able to whip up much of an attacking opportunity in this from this position and the isolated Queen's pawn is thoroughly blockaded.
Stockfish gives a modest black advantage here. } 1/2-1/2


[Event "WWoE Jamboree 2025: Avina Soleimani -- Varnika Nerella"]
[Site "https://lichess.org/study/khPVCJwn/hnX3mQxr"]
[Result "1/2-1/2"]
[Variant "Standard"]
[ECO "A20"]
[Opening "English Opening: King's English Variation"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Avina Soleimani -- Varnika Nerella"]
[UTCDate "2025.01.13"]
[UTCTime "20:02:37"]

{ This started well for you against white's lacklustre opening but you lost the thread a little bit and in the end you were lucky to draw: white missed a simple tactic and stood very well when the draw was agreed. }
1. c4 { [%eval 0.12] } 1... e5 { [%eval 0.12] } 2. g3 { [%eval 0.14] } 2... Nf6 { [%eval 0.19] } 3. Bg2 { [%eval 0.11] } 3... c6 { [%eval 0.13] } 4. d3?! { [%eval -0.18] } { This is hardly a bad move but does nothing to put black off their plan of constructing a strong centre.
better moves are } (4. Nf3!?) (4. d4!) 4... d5 { [%eval -0.26] } 5. cxd5 { [%eval -0.35] } 5... cxd5 $15 { [%eval -0.33] } 6. e3 $17 { [%eval -0.66] } { This rather meek pawn move concedes the advantage to black. } 6... Nc6 { [%eval -0.53] } 7. Nc3 $17 { [%eval -0.57] } 7... d4?! $15 { [%eval -0.28] } { Better to develop with } (7... Bb4 { or }) (7... Be6) 8. exd4 { [%eval -0.39] } 8... exd4 $15 { [%eval -0.4] } 9. Qe2+? $17 { [%eval -1.61] } { Mistake. Ne4 was best. } 9... Qe7? $10 { [%eval -0.11] } { Mistake. Be7 was best. } { That's a mistake, obstructing the development of the Bishop on f8. Either Bishop move blocking the check was better, giving you a clear advantage. } (9... Be6) (9... Be7) 10. Qxe7+?! { [%eval -0.53] } (10. Ne4! $10) 10... Bxe7 $15 { [%eval -0.53] } 11. Nb5 { [%eval -0.49] } 11... Kd8? $16 { [%eval 0.69] } { Mistake. O-O was best. } (11... O-O $15) 12. Bxc6 { [%eval 0.15] } 12... bxc6 { [%eval 0.16] } 13. Nxd4 { [%eval 0.08] } 13... c5 { [%eval 0.21] } 14. Nc6+ { [%eval 0.21] } 14... Kd7 { [%eval 0.26] } 15. Nxe7 { [%eval 0.15] } 15... Kxe7?! $16 { [%eval 0.89] } { Inaccuracy. Bb7 was best. } { Oddly enough this natural recapture is a mistake. } (15... Bb7! 16. f3 Rhe8! $10 { And you are fully equal in this position }) 16. Ne2 { [%eval 0.66] } (16. Be3!) 16... Bf5 { [%eval 1.11] } 17. Be3 { [%eval 0.94] } 17... Rhc8 { [%eval 1.12] } 18. Rc1 { [%eval 1.13] } 18... Kd6 $16 { [%eval 1.66] } { Now white has an advantage } 19. Nf4?! { [%eval 0.66] } { Inaccuracy. Kd2 was best. } 19... g5!? { [%eval 1.18] } 20. Ne2 $16 { [%eval 0.9] } 20... Rab8?! $18 { [%eval 1.92] } { Inaccuracy. Bxd3 was best. } (20... Bxd3 21. Bxg5 c4!? 22. Bxf6 Re8! $14) 21. Bxg5 { [%eval 1.83] } { Both sides now miss something important. } 21... Re8? { [%eval 3.43] } { Mistake. Nd5 was best. } (21... Nd5 22. b3 Bxd3 23. Nf4 Bb5 $18) 22. O-O?? { [%eval 0.51] } { Blunder. Bf4+ was best. } (22. Bf4+ { Tactic: skewer
the ancient advice to look at every check and every capture on every move still holds. }) 22... Rxe2?! { [%eval 1.08] } { Inaccuracy. Nd5 was best. } 23. Bxf6 { [%eval 1.11] } 23... Bxd3?? { [%eval 3.25] } { Blunder. Kd5 was best. } { This allows white to pin the Bishop and seize the advantage } 24. Rfd1 { [%eval 3.23] } 24... Ke6 { [%eval 3.2] } 25. Rxd3 { [%eval 3.12] } 25... Kxf6 { [%eval 3.15] } 26. Rxc5 { [%eval 2.99] } 26... Rbxb2 $18 { [%eval 3.59] } { Draw agreed. But white should press on here: } 27. Rf3+ { That's the big point: attacking and defending at the same time } 27... Ke6 28. Rc6+ Kd5 29. Rh6 Rxa2 30. Rxh7 $18 { When white should win } 1/2-1/2


[Event "WWoE Jamboree 2025: Varnika Nerella -- Nihal Roy"]
[Site "https://lichess.org/study/khPVCJwn/HtSGhoBQ"]
[Result "1-0"]
[Variant "Standard"]
[ECO "C49"]
[Opening "Four Knights Game: Spanish Variation, Double Spanish"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Varnika Nerella -- Nihal Roy"]
[UTCDate "2025.01.13"]
[UTCTime "21:10:16"]

{ Black lost a pawn early on and your advantage built and built throughout the game. Getting a winning advantage is one thing but converting is another and I thought you did this very well. }
1. e4 { [%eval 0.18] } 1... e5 { [%eval 0.21] } 2. Nf3 { [%eval 0.13] } 2... Nc6 { [%eval 0.17] } 3. Nc3 { [%eval 0.11] } (3. d4 exd4 4. Nxd4 (4. Bc4)) 3... Nf6 { [%eval 0.08] } 4. Bb5 { [%eval 0.04] } { You might not have had the opportunity to hear me rant about how juniors should not play Old Stodge a.k.a. Giuoco Pianissimo (and indeed neither should anybody else)...
I have similar although less intense feelings about the Four Knights' Game: it doesn't do a lot to set your opponent problems if they are moderately alert and neither does it give white much of a clue about what to do once they have developed the minor pieces.
In particular, it's not clear how you're going to open a line for your Rooks. } (4. Bc4 Nxe4) (4. d4) 4... Bb4 { [%eval 0.1] } 5. d3 { [%eval 0.06] } 5... Bxc3+ { [%eval 0.21] } 6. bxc3 $10 { [%eval 0.12] } 6... a6? $18 { [%eval 1.21] } { Inaccuracy. d6 was best. } { Black fails the 'be moderately alert' test and urges white to take away the defender of the e-pawn. } (6... d6) 7. Bxc6 { [%eval 1.12] } 7... bxc6 { [%eval 1.29] } 8. Nxe5 { [%eval 1.58] } 8... Qe7 { [%eval 1.74] } 9. Nf3 $18 { [%eval 1.28] } { white is a comfortable prawn ahead } 9... a5?! { [%eval 2.24] } { Inaccuracy. d5 was best. } { If you're losing or even if you're just a bit worse it's not in your interest to play passively with lots of pawn moves.
Black should develop quickly and try to make some trouble for white so that white makes a mistake and black can get back into the game.
Blacks last move does nothing of the sort... } 10. Rb1?! { [%eval 1.44] } { Inaccuracy. O-O was best. } 10... Ba6? { [%eval 2.93] } { Mistake. d5 was best. } 11. O-O { [%eval 2.93] } 11... O-O { [%eval 2.95] } 12. Bg5 { [%eval 2.87] } 12... h6 { [%eval 2.76] } 13. Bf4?! { [%eval 1.99] } { Inaccuracy. Bh4 was best. } 13... Ng4? { [%eval 3.39] } { Mistake. d5 was best. } 14. Bxc7?! { [%eval 2.06] } { Inaccuracy. Nd4 was best. } { Black doesn't take the opportunity, but this sets up a discovered attack that black can make with d7-d5. } 14... Rfc8? { [%eval 4.0] } { Mistake. d5 was best. } (14... d5 { And black has the unwelcome threat of dxc4 when your d3 pawn is pinned }) 15. Bg3 { [%eval 4.07] } 15... g6 { [%eval 4.88] } 16. Nd4 { [%eval 4.2] } 16... Qg5 { [%eval 5.13] } 17. h3?! { [%eval 3.39] } { Inaccuracy. Nf3 was best. } 17... Nf6?! { [%eval 4.59] } { Inaccuracy. Ne3 was best. } 18. Qf3 { [%eval 4.27] } { White is very much in control and converts the win without further problems } 18... Ne8 { [%eval 4.8] } 19. Bf4 { [%eval 4.59] } 19... Qc5 { [%eval 4.87] } 20. Bd2 { [%eval 4.56] } 20... g5?! { [%eval 6.29] } { Inaccuracy. a4 was best. } { I did advise black to make trouble, but this loosening pawn move on on the side of the board where they have only one piece (and that on e8) is not going to cause problems for anybody but black. } 21. h4 { [%eval 5.68] } 21... f6 { [%eval 6.81] } 22. Nf5 { [%eval 6.69] } 22... Rc7 { [%eval 6.77] } 23. Nxh6+ { [%eval 7.07] } 23... Kh7 { [%eval 7.39] } 24. Nf5 { [%eval 6.95] } 24... Rb7?! { [%eval 11.36] } { Inaccuracy. g4 was best. } { Now white breaks through on the King's side } 25. Qh5+ { [%eval 11.33] } 25... Kg8 { [%eval 10.75] } 26. hxg5 { [%eval 10.7] } 26... Ng7 { [%eval 11.4] } 27. Nxg7 { [%eval 9.78] } 27... Kxg7 { [%eval 11.99] } 28. gxf6+ { [%eval 12.13] } 28... Kxf6 { [%eval 11.77] } 29. Qxc5 { [%eval 11.7] } 29... Rab8 { [%eval 12.41] } 30. Bg5+ { [%eval 11.73] } 30... Ke6?! { [%eval #1] } { Checkmate is now unavoidable. Kg7 was best. } { Do I have this position right? } 31. Qf5+ { [%eval #3] } (31. Qe7# { Is checkmate }) 31... Kd6 { [%eval #3] } 32. Bf4+ { [%eval #5] } 32... Ke7 { [%eval #6] } 33. Bxb8 { [%eval #6] } 33... Rxb1 { [%eval #6] } 34. Rxb1 { [%eval #5] } 34... Kd8 { [%eval #1] } 35. Qf8# 1-0


[Event "WWoE Jamboree 2025: Finn Jackson -- Shreyas Pasupulety"]
[Site "https://lichess.org/study/khPVCJwn/2SRQA4jN"]
[Result "0-1"]
[Variant "Standard"]
[ECO "D00"]
[Opening "Queen's Pawn Game: Accelerated London System"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Finn Jackson -- Shreyas Pasupulety"]
[UTCDate "2025.01.13"]
[UTCTime "21:51:39"]

{ After a do-nothing London system opening White suddenly wobbled and cut off the retreat for their dark squared Bishop. I think you quickly spotted this and although you didn't trap the piece in the most accurate manner you did net it and won the game without trouble. }
1. d4 { [%eval 0.17] } 1... d5 { [%eval 0.24] } 2. Bf4 { [%eval 0.0] } 2... e6 { [%eval 0.11] } 3. e3 { [%eval 0.1] } 3... c5 { [%eval 0.08] } 4. c3 { [%eval 0.06] } 4... Nc6 { [%eval 0.2] } 5. Nf3 { [%eval 0.1] } 5... Qb6 { [%eval 0.21] } 6. Qd2 { [%eval 0.09] } 6... Nf6 $10 { [%eval 0.1] } 7. g3?! $15 { [%eval -0.67] } { Inaccuracy. h3 was best. } { The light squared Bishop could be developed already but this weakening pawn move cuts off the retreat for the dark squared Bishop } 7... Bd7 { [%eval -0.37] } 8. Ne5?! $17 { [%eval -1.15] } { Inaccuracy. Qc2 was best. } 8... cxd4? $10 { [%eval 0.13] } { Mistake. Nxe5 was best. } (8... Nxe5 9. Bxe5 (9. dxe5 Ne4 10. Qc2 g5) 9... Ne4 { And the Bishop can be trapped with F6 and G5 } { [%csl Gf4] }) 9. cxd4?? $19 { [%eval -4.85] } { Blunder. Nxd7 was best. } (9. Nxd7 Nxd7 10. exd4 $10 { And the Bishop can grovel back to e3. }) 9... Bb4 { [%eval -4.66] } 10. Nc3 { [%eval -4.49] } 10... Ne4? { [%eval -2.78] } { Mistake. Nxe5 was best. } 11. Qd3?? { [%eval -6.49] } { Blunder. Nxd7 was best. } 11... Nxe5 { [%eval -6.27] } 12. Bxe5 { [%eval -6.53] } 12... f6?! { [%eval -4.59] } { Inaccuracy. Bxc3+ was best. } 13. a3? { [%eval -8.0] } { Mistake. Be2 was best. } 13... Bxc3+ { [%eval -7.83] } 14. bxc3 { [%eval -8.04] } 14... fxe5?! { [%eval -5.18] } { Inaccuracy. Qb2 was best. } 15. dxe5?! { [%eval -8.14] } { Inaccuracy. Rb1 was best. } 15... Qa5?! { [%eval -5.06] } { Inaccuracy. Qb2 was best. } 16. Bg2 { [%eval -5.5] } 16... Qxc3+ { [%eval -4.99] } 17. Qxc3 { [%eval -5.03] } 17... Nxc3 { [%eval -4.85] } 18. O-O { [%eval -5.24] } 18... O-O { [%eval -5.15] } 19. Rfe1 { [%eval -5.35] } 19... Na4 { [%eval -4.49] } 20. Rad1 { [%eval -4.86] } 20... Bc6 { [%eval -5.02] } 21. e4 { [%eval -5.0] } 21... Nc3 { [%eval -5.06] } 22. Rd4 { [%eval -5.27] } 22... Nxe4 { [%eval -5.19] } 23. Bxe4 { [%eval -5.76] } 23... dxe4 { [%eval -5.52] } 24. Rd6 { [%eval -5.72] } 24... Bd5 { [%eval -5.7] } 25. a4 { [%eval -5.67] } 25... Rfd8 { [%eval -5.44] } 26. Rd1 { [%eval -6.59] } 26... Rxd6 { [%eval -6.83] } 27. exd6 { [%eval -6.62] } 27... Rd8 { [%eval -6.49] } 28. Rb1 { [%eval -6.73] } 28... Rxd6 { [%eval -6.68] } 29. Rd1 { [%eval -7.36] } 29... Ra6 { [%eval -7.29] } 30. Ra1 { [%eval -7.36] } 30... Ra5 { [%eval -7.17] } 31. Ra3 { [%eval -7.58] } 31... b5 { [%eval -7.52] } 32. h3 { [%eval -8.07] } 32... Rxa4 { [%eval -8.07] } 33. Rb3 { [%eval -10.9] } 33... Bxb3 { [%eval -10.61] } { Fine vigorous play from black throughout } 0-1


[Event "WWoE Jamboree 2025: Shreyas Pasupulety -- Ryan Masca"]
[Site "https://lichess.org/study/khPVCJwn/awNxrtkN"]
[Result "1-0"]
[Variant "Standard"]
[ECO "B22"]
[Opening "Sicilian Defense: Alapin Variation, Barmen Defense, Central Exchange"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Shreyas Pasupulety -- Ryan Masca"]
[UTCDate "2025.01.13"]
[UTCTime "21:59:18"]

{ This was very nearly joyful attacking game where you played with vigour (although not with complete accuracy) in an open position, but I fear you tripped yourself up at the very end. }
1. e4 { [%eval 0.18] } 1... c5 { [%eval 0.25] } 2. c3 { [%eval 0.0] } 2... d5 { [%eval 0.16] } (2... Nf6 { Evgeny Sveshnikov, who was a specialist in the C3 Sicilian and who wrote at least one book about, it says somewhere that he feels sorry for players who were victims of the fashion for playing D5 against the C3 Sicilian, as NF6 is the better move. I must say I have always preferred NF6 but there's not a lot wrong with D5. }) 3. exd5 { [%eval 0.12] } 3... Qxd5 { [%eval 0.19] } 4. d4 { [%eval 0.13] } 4... cxd4 { [%eval 0.1] } { This pawn exchange releases the c3 square for white's knight, and so must be followed up accurately or white will just be better. } 5. cxd4 { [%eval 0.16] } 5... Nc6 { [%eval 0.34] } 6. Nf3 { [%eval 0.2] } 6... Bg4 $14 { [%eval 0.33] } { In master chess white wins about half the games from this position -- which is to say white scores about 75% of the points } (6... e5 { Is the more popular move recommended many years ago by Joe Gallagher in his book beating the anti sicilians }) 7. Nc3 $14 { [%eval 0.34] } (7. Be2 { Sets a little trap: } 7... Bxf3 8. Bxf3 Qxd4?? 9. Bxc6+ bxc6 10. Qxd4 $18) 7... Qd7?? $18 { [%eval 3.69] } { Blunder. Bxf3 was best. } { A very interesting position where black seems ahead in development but their king, facing open lines in the centre, is vulnerable to white's tactics } (7... Bxf3 { The main line of theory is quite a wild ride } 8. gxf3 Qxd4 9. Qxd4 Nxd4 10. Nb5 Nc2+ 11. Kd1 Nxa1 12. Nc7+ Kd7 13. Nxa8 $14 { After this curious sequence we reach a position where black is a pawn ahead but white has the better chances, having the Bishop pair and easier development } 13... e6 (13... e5)) 8. Bb5?? $14 { [%eval 0.45] } { Blunder. d5 was best. } (8. d5! $18 { Is right, winning a piece, because if the knight moves } 8... Nb8? { then } 9. Bb5 $18) 8... a6 { [%eval 0.48] } 9. Bxc6 $14 { [%eval 0.5] } 9... Qxc6? $18 { [%eval 1.67] } { Mistake. bxc6 was best. } 10. d5 { [%eval 1.57] } 10... Qc7 { [%eval 2.15] } 11. Qa4+?! $16 { [%eval 1.04] } { Inaccuracy. h3 was best. } (11. Qd4 { h3 is indeed a good move but this is at least as good;
black is going to find it very hard to develop. }) 11... Bd7 { [%eval 1.41] } 12. Qd4 { [%eval 1.31] } 12... Nf6? $18 { [%eval 3.16] } { Mistake. e5 was best. } 13. Bf4 { [%eval 3.15] } { White has almost everything he might want out of an opening: more space, better development and the initiative. All white needs to do now is castle, and they will have a very fine -- perhaps winning -- position. } 13... Qa5 { [%eval 3.14] } 14. O-O { [%eval 2.61] } 14... g6?? { [%eval 5.75] } { Blunder. e6 was best. } 15. Rfe1 { [%eval 5.24] } 15... Bg7 $18 { [%eval 5.3] } 16. Qd2?? $16 { [%eval 2.06] } { Blunder. d6 was best. } { Unnecessarily cautious, but your position was so wonderful before, you're still better here } (16. d6! $18 { Black has no effective discovery with the knight } 16... e6 (16... Nh5?? 17. Rxe7+ Kf8 18. Be5 f6?? 19. Rxd7 fxe5 20. Qc4 { mates }) 17. Be5! $18) 16... Qc5 { [%eval 2.25] } 17. d6 { [%eval 2.31] } 17... e6 { [%eval 2.3] } 18. Rac1 { [%eval 2.03] } 18... O-O $18 { [%eval 1.82] } 19. Be5?! $16 { [%eval 1.17] } { Inaccuracy. Na4 was best. } 19... Qb6 { [%eval 1.27] } 20. Ne4 { [%eval 0.72] } 20... Nxe4 { [%eval 0.75] } 21. Rxe4 $14 { [%eval 0.71] } { As pieces get swapped off, black is slowly cobbling together a defence } 21... Bc6?? $18 { [%eval 3.31] } { Blunder. Rac8 was best. } 22. Bxg7! { [%eval 3.06] } 22... Kxg7 { [%eval 2.85] } 23. Rh4! { [%eval 3.05] } 23... h5 $18 { [%eval 3.03] } { You have done very well so far in finding the right moves but the next one escapes you } 24. Qc3+?? $14 { [%eval 0.57] } { Blunder. Ne5 was best. } (24. Ne5 { Improves the activity of your least active piece and threatens to remove black's most active piece }) 24... Kh6?? $18 { [%eval 3.21] } { Blunder. f6 was best. } (24... f6 $14) 25. Ne5! { [%eval 3.09] } { That's the ticket! } 25... Bb5?? { [%eval #8] } { Checkmate is now unavoidable. Kh7 was best. } 26. Qd2+?? { [%eval 6.18] } { Lost forced checkmate sequence. Ng4+ was best. } { white's position is absolutely crushing but this wasn't quite the best move } (26. Ng4+! Kg5 (26... Kh7 { Now there's a long although not especially difficult forced checkmate } 27. Nf6+ Kh6 28. Qd2+ Kg7 29. Nxh5+! gxh5 30. Qg5+ Kh8 31. Rxh5#) 27. Qf6#) 26... Kg7 $18 { [%eval 6.01] } 27. g4?? $16 { [%eval 1.16] } { Blunder. Rc7 was best. } { Very logical but best of all was to bring your last piece to threaten the black king } 27... f6?? { [%eval 6.43] } { Blunder. Rad8 was best. } 28. Rc7+ { [%eval 6.1] } 28... Qxc7 { [%eval 6.11] } 29. dxc7 { [%eval 5.96] } 29... fxe5 { [%eval 5.82] } 30. gxh5 { [%eval 6.17] } 30... Rg8 { [%eval 8.2] } 31. hxg6 { [%eval 6.41] } 31... Kxg6 { [%eval 6.1] } 32. Qh6+?? { [%eval #-5] } { Checkmate is now unavoidable. f3 was best. } { The score sheet here doesn't tell the whole story I think -- in particular it doesn't record the result! But if I have the position correct here then the black king must move with discovered check -- after which, tragically, it is black who checkmates white -- so I guess this is the game that you lost. } (32. f3 Kf5+ 33. Kf2) 32... Kf7+ 33. Kh1 Bc6+ 1-0


[Event "WWoE Jamboree 2025: Ish Ananth Dudan -- Shreyas Pasupulety"]
[Site "https://lichess.org/study/khPVCJwn/VVzEMGOH"]
[Result "0-1"]
[Variant "Standard"]
[ECO "C01"]
[Opening "French Defense: Exchange Variation"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Ish Ananth Dudan -- Shreyas Pasupulety"]
[UTCDate "2025.01.13"]
[UTCTime "22:07:54"]

{ White seemed terribly short of ideas against your French Defence and you soon had a small and then a large advantage never losing control of the game. Pretty to watch! }
1. e4 { [%eval 0.18] } 1... e6 { [%eval 0.28] } 2. d4 { [%eval 0.28] } 2... d5 { [%eval 0.33] } 3. exd5 { [%eval 0.22] } (3. Nc3 Bb4 4. exd5 exd5 { Transposes to the game }) 3... exd5 { [%eval 0.14] } 4. Nc3 { [%eval 0.0] } { This apparently logical move I think is an inaccuracy, especially if it is not played with a definite idea in mind.
the knight doesn't have anywhere very sensible to go to next and so perhaps should aim for the king side via d2 or wait until after c2-c4 when Nc3 does put pressure on d5. } 4... Bb4 { [%eval 0.18] } { Transposing to the WINAWER } (4... Nf6) 5. Bb5+ { [%eval -0.1] } { This threatens nothing and just encourages black to play a move they might have wanted to play anyway, with gain of time! } (5. Bd3) 5... c6 $10 { [%eval -0.11] } 6. Ba4?! $17 { [%eval -0.88] } { Inaccuracy. Bd3 was best. } 6... Nf6?! $15 { [%eval -0.55] } { I think you had a chance here to make trouble for the white Bishop } (6... a5!?) (6... Bxc3+! 7. bxc3 a5 { Now b5 & A4 will net the Bishop } 8. a3 b5 9. Bb3 a4 10. Ba2 $17 { White has saved the piece but can only bring it back into the game by sacrificing at least a pawn.
black can wait for the pawn or simply move the battle towards the King's side where black will be effectively a piece up. }) 7. Nf3?! $17 { [%eval -1.19] } { Inaccuracy. Ne2 was best. } 7... O-O { [%eval -1.08] } 8. O-O $19 { [%eval -1.88] } 8... Bg4? $15 { [%eval -0.46] } { Mistake. Bxc3 was best. } (8... Bxc3 9. bxc3 a5 { This is the strongest plan with the same ideas as explained in the last note } 10. a3 b5 11. Bb3 a4 12. Ba2 Bg4 13. h3 Bxf3 14. Qxf3 $17) 9. h3 { [%eval -0.71] } (9. Qd3) 9... Bh5 $15 { [%eval -0.69] } 10. a3?! $17 { [%eval -1.47] } { Inaccuracy. g4 was best. } { Again white urges black to play a move they might have wanted to play anyway } (10. g4 Bg6) 10... Bxc3 { [%eval -1.43] } 11. bxc3 { [%eval -1.41] } 11... Nbd7 { [%eval -1.07] } 12. Re1?! $19 { [%eval -1.89] } { Inaccuracy. Bb3 was best. } (12. Bb3 b5) 12... Qa5?! $17 { [%eval -0.88] } { Inaccuracy. a5 was best. } (12... a5! { As before, threatens to win the Bishop and will at least trap it behind bars }) 13. Re3?? $19 { [%eval -5.1] } { Blunder. Bb3 was best. } (13. Bb3) 13... Qxa4 { [%eval -5.08] } { It turned out to be easier to win the Bishop than I thought.
white's position now falls apart and I think the rest of the game doesn't need a lot of comment } 14. g4 { [%eval -5.1] } 14... Bg6 { [%eval -5.18] } 15. Rb1?! { [%eval -7.58] } { Inaccuracy. Ne5 was best. } 15... Bxc2 { [%eval -7.3] } 16. Qe2 { [%eval -7.81] } 16... Bxb1 { [%eval -7.77] } 17. Qb2 { [%eval -8.44] } 17... Qc2 { [%eval -8.31] } 18. Qa1 { [%eval -10.2] } 18... Qxc1+ { [%eval -9.96] } 19. Kg2 { [%eval -11.06] } 19... Rfe8 { [%eval -10.8] } 20. Rd3 { [%eval -11.03] } 20... Qc2 { [%eval -11.03] } 21. Ne1?! { [%eval #-8] } { Checkmate is now unavoidable. Rd2 was best. } 21... Rxe1 { [%eval #-7] } 22. Rg3 { [%eval #-5] } 22... Rae8 { [%eval #-6] } 23. Re3 { [%eval #-4] } 23... R8xe3 { [%eval #-3] } 24. c4 { [%eval #-3] } 24... R1e2 { [%eval #-3] } 0-1


[Event "WWoE Jamboree 2025: Csege Manczar -- Ananya Nerella"]
[Site "https://lichess.org/study/khPVCJwn/qlcdMhlj"]
[Result "1-0"]
[Variant "Standard"]
[ECO "A00"]
[Opening "Anderssen's Opening"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Csege Manczar -- Ananya Nerella"]
[UTCDate "2025.01.13"]
[UTCTime "20:59:08"]

{ White played the apparently straightforward idea of closing the centre, leaving their own king in the middle and attacking on the king side, but you were unable to find anything either to distract or to counter this plan. }
1. a3 { [%eval -0.03] } 1... e5 { [%eval 0.0] } 2. c4 { [%eval 0.0] } 2... Nf6 { [%eval 0.0] } { White has tricked you into playing a Sicilian defence with colours reversed. I'm not sure if that's much of an achievement when white has wasted(?) a move with a3 } 3. Nc3 { [%eval -0.08] } 3... Nc6 { [%eval 0.0] } 4. d3 { [%eval -0.17] } 4... Bc5 { [%eval 0.18] } { I don't know if you ever play either side of the Sicilian defence, but it's not usually the case that white in the Sicilian [i.e. black here] gets very far with straightforward development like this -- the minor pieces can sometimes get kicked around by the enemy pawns.
This is also a point to be made in your next game. } 5. e4 { [%eval -0.11] } 5... O-O { [%eval 0.0] } 6. Bg5 { [%eval -0.35] } 6... h6 { [%eval -0.42] } 7. Be3 { [%eval -0.34] } 7... Bxe3 { [%eval -0.07] } 8. fxe3 { [%eval -0.06] } 8... d6 { [%eval 0.1] } 9. Be2 { [%eval 0.02] } 9... Be6 { [%eval 0.16] } 10. h3 { [%eval -0.12] } 10... Re8 { [%eval 0.23] } 11. g4 $10 { [%eval -0.14] } { You have found yourself in a position with a blocked centre.
it's pretty clear but white wants to attack on the King's side but what are you supposed to do? } 11... a5?! { [%eval 0.46] } { Inaccuracy. a6 was best. } (11... a6 12. h4 { Is not actually that threatening, for example } 12... Nh7 13. g5 hxg5 14. hxg5 g6 15. Kd2 Nxg5 16. Bg4 { And black can think about making trouble for white with a move like b5. } 16... b5) 12. Nf3 { [%eval 0.39] } 12... h5? { [%eval 1.75] } { Mistake. Nh7 was best. } { White is trying to attack on the king side and needs open lines to do so -- this move clearly helps white } 13. Ng5?! $16 { [%eval 0.93] } { Inaccuracy. gxh5 was best. } 13... hxg4?! { [%eval 1.51] } { Inaccuracy. h4 was best. } 14. Nxe6 { [%eval 0.96] } 14... Rxe6 { [%eval 1.3] } 15. hxg4 { [%eval 1.28] } 15... Na7?! $18 { [%eval 2.02] } { Inaccuracy. Nh7 was best. } 16. Kd2 { [%eval 1.71] } { White is still plodding through their plan but black has not been able to find anything to distract them
the end comes quite quickly } 16... Qe7?? $18 { [%eval 4.28] } { Blunder. Nh7 was best. } (16... Nh7! { Aims to challenge the H file when you don't stand too badly but it's always harder to defend than attack } 17. Qg1 c6 18. Qh2 (18. Rh2 Rh6) 18... Rh6) 17. Qg1 { [%eval 4.08] } 17... c6?! { [%eval 6.47] } { Inaccuracy. Nh7 was best. } 18. g5 { [%eval 6.28] } 18... Nd7 { [%eval 6.28] } 19. Qh2 { [%eval 6.44] } 19... Kf8?? { [%eval #1] } { Checkmate is now unavoidable. Rh6 was best. } 20. Qh7?? { [%eval 4.73] } { Lost forced checkmate sequence. Qh8# was best. } 20... Qd8?! $18 { [%eval 7.29] } { Inaccuracy. Ke8 was best. } 1-0


[Event "WWoE Jamboree 2025: Zino Zigan -- Ananya Nerella"]
[Site "https://lichess.org/study/khPVCJwn/TDfi4rXF"]
[Result "1-0"]
[Variant "Standard"]
[ECO "A25"]
[Opening "English Opening: King's English Variation, Reversed Closed Sicilian"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Zino Zigan -- Ananya Nerella"]
[UTCDate "2025.01.13"]
[UTCTime "21:17:46"]

{ I haven't a lot to say about this game mostly because I'm not sure what the moves were. You certainly handle the opening better than white and at one point had a nice advantage due to your big centre, but what went wrong after that I do not know. }
1. c4 { [%eval 0.12] } 1... e5 { [%eval 0.12] } 2. Nc3 { [%eval 0.04] } 2... Nc6 { [%eval 0.21] } 3. g3 { [%eval 0.2] } 3... Nf6 { [%eval 0.28] } 4. Bg2 { [%eval 0.31] } 4... Bc5 { [%eval 0.21] } 5. a3 { [%eval 0.25] } 5... O-O { [%eval 0.33] } 6. e3 { [%eval 0.25] } 6... Re8 { [%eval 0.38] } 7. b4 { [%eval 0.17] } 7... Be7 { [%eval 0.61] } 8. Nge2 { [%eval 0.62] } 8... d6 $14 { [%eval 0.65] } { Just as before you have played sensible classical developing moves but they don't always work so well against these hyper modern openings. White has developed all their pieces behind their flexible wall of pawns and already has a small advantage because your pieces are not really able to pursue a meaningful plan. } 9. b5?! { [%eval 0.0] } { Inaccuracy. O-O was best. } 9... Na5 $10 { [%eval 0.0] } { White now spends some time fidgeting with queen and prawns to no great effect while you seize control of the centre. } 10. Qa4?! { [%eval -0.52] } 10... c6 { [%eval -0.57] } 11. d3 { [%eval -0.91] } 11... cxb5?! { [%eval 0.0] } { Inaccuracy. d5 was best. } 12. cxb5? $17 { [%eval -1.15] } { Mistake. Qxb5 was best. } 12... Bd7?! $10 { [%eval -0.25] } { Inaccuracy. Be6 was best. } 13. Bd2 { [%eval -0.78] } 13... a6 { [%eval -0.51] } 14. Qb4?! $17 { [%eval -1.27] } { Inaccuracy. O-O was best. } 14... d5 { [%eval -1.27] } 15. Qb2?! { [%eval -2.02] } { Inaccuracy. Qb1 was best. } 15... Be6? $15 { [%eval -0.52] } { Mistake. d4 was best. } 16. h3? { [%eval -1.88] } { Mistake. O-O was best. } 16... Qd7?! $17 { [%eval -1.23] } { Inaccuracy. d4 was best. } { You've got nice development and a big pawn centre and you stand a little better. White has not been able to label your centre as weak and nothing much is happening on the long diagonal .
So for the next few moves I'm absolutely confident I've got the move order wrong but I can't reconstruct the correct move order from the score sheet. The pieces do end up on the right squares but I find it hard to believe that the sequence that I have here is the right one. } 17. Nxd5?? { [%eval -3.71] } { Blunder. Rb1 was best. } 17... Bxd5 { [%eval -3.39] } 18. Bxd5?! { [%eval -4.88] } { Inaccuracy. e4 was best. } 18... Nxd5?? { [%eval -1.98] } { Blunder. Qxd5 was best. } 19. Bxa5 { [%eval -1.55] } 19... Bc5?! { [%eval -0.86] } { Inaccuracy. axb5 was best. } 20. Rb1 { [%eval -0.85] } 20... Re6?! { [%eval -0.18] } { Inaccuracy. Qf5 was best. } 21. O-O { [%eval -0.13] } 21... Nxe3?? { [%eval 1.56] } { Blunder. Rg6 was best. } 22. fxe3 { [%eval 1.6] } 22... Bxe3+ { [%eval 2.11] } 23. Kg2 { [%eval 2.1] } 23... Qd5+ { [%eval 2.38] } 24. Rf3 { [%eval 2.51] } 24... Rh6?! { [%eval 3.34] } { Inaccuracy. Rf6 was best. } 25. h4 { [%eval 2.8] } 25... Rf6 { [%eval 2.64] } 26. Rf1 $18 { [%eval 2.83] } { So I think on the score sheet we have the move queen takes Bishop on a5, but this isn't possible because there's a pawn on B5. If I swap the pawn on b5 for the pawn on a6 then Qxa5 becomes possible but it's clear from later moves written down that this swap didn't happen ... So unless you manage to sort out the right moves in the right order I don't think I can say much more about this game. } { [%csl Ga5][%cal Gd5a5] } 1-0


[Event "Bucharest"]
[Site "https://lichess.org/study/khPVCJwn/OJbogb4F"]
[Date "1963.??.??"]
[White "Korchnoi, Viktor"]
[Black "Szabo"]
[Result "1-0"]
[Annotator "pawn mobility: pieces behind p"]
[Variant "Standard"]
[ECO "A22"]
[Opening "English Opening: Carls-Bremen System"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Korchnoi, Viktor - Szabo"]

{ This game shows better the advantages of a flexible wall of pawns against orthodox minor piece development. }
1. c4 e5 2. Nc3 Nf6 3. g3 Bc5 4. Bg2 O-O 5. e3 Re8 6. Nge2 Nc6 7. O-O d6 8. d4 Bb6 9. h3 Bf5 $14 { [#] ? Following classical opening principles, but this is not a classical opening - rather, White is perfectly placed to harass the Black minor pieces which are strutting about without adequate cover. } 10. d5 Nb8 11. g4 Bd7 12. Ng3 h6 13. Kh2 a5 14. f4 exf4 15. exf4 Nh7 $16 { [#] White seems to have a pawn majority on both sides! } 16. g5 Na6 17. gxh6 Qh4 18. hxg7 Nf6 19. f5 Be3 20. Nce4! $18 Nxe4 21. Nxe4 Bxc1 22. Rxc1 Nc5 (22... Rxe4 23. Bxe4 Qxe4 24. Qh5) 23. Qg4 Rxe4 24. Bxe4 Qxg4 25. hxg4 Nxe4 26. Rce1 Nc5 27. f6 Re8 28. Rxe8+ Bxe8 29. Re1 Ba4 30. Re3 $18 { 1-0 (threat Rh3) korchnoi-szabo 1963 ) } { [%cal Ge3h3,Gh3h8] } 1-0


[Event "WWoE Jamboree 2025: Ananya Nerella -- Prisha Chovatia"]
[Site "https://lichess.org/study/khPVCJwn/JQpKCaPV"]
[Result "1-0"]
[Variant "Standard"]
[ECO "A07"]
[Opening "King's Indian Attack: Omega-Delta Gambit"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Ananya Nerella -- Prisha Chovatia"]
[UTCDate "2025.01.13"]
[UTCTime "21:59:46"]

{ You took advantage of black's mistakes, large and small, and won without trouble. }
1. Nf3 { [%eval 0.14] } 1... d5 { [%eval 0.18] } 2. g3 { [%eval 0.15] } { I have things to say about playing hyper modern openings... } 2... e5?! $16 { [%eval 0.91] } { Inaccuracy. g6 was best. } { Black is to be commended for the strategy of trying to create a big centre but there is a tactical flaw } 3. Nxe5 { [%eval 0.98] } 3... Nf6 { [%eval 1.24] } 4. Bg2 { [%eval 1.09] } 4... Nc6 { [%eval 1.25] } 5. Nxc6 { [%eval 1.22] } 5... bxc6 { [%eval 1.58] } 6. O-O?! { [%eval 0.92] } { Inaccuracy. d3 was best. } 6... Ne4? $18 { [%eval 2.53] } { Mistake. h5 was best. } (6... h5 { Black is a pawn behind but may be able to create some mischief by starting the standard attack down the H file }) 7. d3 { [%eval 2.54] } 7... Ng5 { [%eval 2.58] } 8. h4 { [%eval 2.23] } 8... Ne6 { [%eval 2.3] } 9. Nd2 { [%eval 2.1] } 9... Rb8 { [%eval 2.19] } 10. e4 { [%eval 2.1] } 10... Rb5?! { [%eval 2.8] } { Inaccuracy. Be7 was best. } 11. b3 { [%eval 2.48] } 11... g5 { [%eval 2.81] } { That's the right attitude even if it's the wrong move — actually I'm not sure it's the wrong move... } 12. hxg5 { [%eval 2.88] } 12... Nxg5 { [%eval 3.43] } 13. exd5 { [%eval 3.39] } 13... cxd5 { [%eval 3.54] } 14. Bb2 { [%eval 3.31] } { Black's position is pretty awful but they still have chances to create trouble - however their next move misses something important } 14... Bh3? { [%eval 6.13] } { Mistake. Rg8 was best. } 15. Bxh8 { [%eval 6.08] } 15... Bc5 { [%eval 7.21] } 16. Qh5 { [%eval 6.98] } 16... Bd4 { [%eval 9.75] } 17. Rae1+ { [%eval 9.75] } 17... Be5 { [%eval 10.17] } 18. Rxe5+ { [%eval 10.16] } 18... Kf8?! { [%eval #2] } { Checkmate is now unavoidable. Kd7 was best. } 19. Qh6+ { [%eval #1] } 19... Kg8 { [%eval #1] } 20. Qg7# 1-0


[Event "WWoE Jamboree 2025: Oscar Pocknell -- Jake Bena"]
[Site "https://lichess.org/study/khPVCJwn/7ZNbMUWS"]
[Result "0-1"]
[Variant "Standard"]
[ECO "D53"]
[Opening "Queen's Gambit Declined"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Oscar Pocknell -- Jake Bena"]
[UTCDate "2025.01.13"]
[UTCTime "22:24:13"]

{ You handled the Queen's gambit quite sensibly and had chances of advantage. However exchanges in the centre led to a level position, and then you allowed black to mangle your king side defences. }
1. d4 { [%eval 0.17] } 1... d5 { [%eval 0.24] } 2. c4 { [%eval 0.26] } 2... e6 { [%eval 0.27] } 3. Nc3 { [%eval 0.18] } 3... Nf6 { [%eval 0.24] } 4. Bg5 { [%eval 0.19] } (4. cxd5 exd5 { There seemed to be a time when every single repertoire book recommending the Queen's gambit also recommended the white play the exchange variation, usually with Nge2. } 5. Bg5) 4... Be7 { [%eval 0.12] } 5. Nf3 { [%eval 0.09] } 5... c6 { [%eval 0.21] } 6. e3 { [%eval 0.18] } 6... O-O { [%eval 0.22] } 7. Bd3 { [%eval 0.22] } { This obviously is a very sensible move and there's nothing wrong with it but you might on another occasion try leaving this Bishop at home for little while. It may be that black will be tempted to play ...dxc4 when you move from f1 to c4 in one move and not to so Qc2 or Rc1 might gain a tempo. } (7. Qc2) (7. Rc1) 7... Re8?! { [%eval 0.56] } { It looks hard for Black to play ...e5, so the Rook has been placed on the wrong file. } 8. O-O { [%eval 0.58] } 8... Nbd7 { [%eval 0.52] } 9. Qc2 { [%eval 0.61] } 9... h6 { [%eval 0.59] } 10. Bh4 { [%eval 0.59] } 10... c5 { [%eval 0.56] } 11. Rfd1 $14 { [%eval 0.53] } (11. Rad1) 11... b6?! $16 { [%eval 1.48] } { Inaccuracy. cxd4 was best. } { Both sides have played normal looking Queens gambit moves but black is a little bit loose and has played not so accurately — losing a move with ...c5 and placing the Rook on a file that is not likely to be opened. White can gain the advantage here with accurate play. } 12. e4?! { [%eval 0.71] } { Inaccuracy. dxc5 was best. } (12. dxc5! { This is awkward for black mostly because of the Rook on D1 } 12... Nxc5 (12... bxc5 13. Bxf6 Nxf6 14. cxd5 exd5 (14... Nxd5 15. Nxd5 exd5 16. Bb5 { With a more active position; blacks hanging prawns are more of a weakness than a strength }) 15. Bb5 Rf8 16. Bc6 Rb8 17. Nxd5 { Winning a prawn }) 13. cxd5 Nxd3 14. dxe6! { And white will come out a pawn ahead }) 12... dxe4 $16 { [%eval 0.87] } 13. Nxe4?! $10 { [%eval 0.08] } { Inaccuracy. Bxe4 was best. } 13... Bb7 { [%eval 0.01] } 14. Bxf6 { [%eval -0.16] } 14... Nxf6 { [%eval -0.11] } 15. Nxf6+ { [%eval -0.36] } 15... Bxf6 { [%eval -0.37] } 16. dxc5 { [%eval -0.3] } 16... Qc7 { [%eval -0.13] } 17. cxb6 { [%eval -0.13] } 17... axb6 $10 { [%eval -0.12] } { After the exchanges this position is quite equal -- white has an extra pawn but black has the Bishop pair in an open position } 18. a3?? { [%eval -2.03] } { Blunder. Nd2 was best. } { This allows black to break up the white King's defences and start an attack } 18... Bxf3! { [%eval -1.91] } 19. gxf3 { [%eval -1.76] } 19... Qf4 { [%eval -1.7] } 20. Be4 $19 { [%eval -2.11] } { I'm not sure I've got these next moves correct buy all the ones on the score sheet but if they're right then white and black missed something important! } 20... Be5?? $16 { [%eval 0.69] } { Blunder. Ra5 was best. } (20... Ra5! { Is an unusual Rook lift on the 4th rank bringing a powerful piece into the attack }) 21. Re1?? { [%eval -2.31] } { Blunder. Bxa8 was best. } 21... Qxh2+ { [%eval -1.94] } 22. Kf1 { [%eval -2.26] } 22... Qh1+?? { [%eval 0.62] } { Blunder. Rad8 was best. } 23. Ke2 { [%eval 0.8] } 23... Qh2?? { [%eval 2.66] } { Blunder. Qh4 was best. } 24. Rf1?? { [%eval -1.86] } { Blunder. Bxa8 was best. } 24... Bd4?? { [%eval 1.34] } { Blunder. Rac8 was best. } 25. Rad1?? { [%eval -2.78] } { Blunder. Bxa8 was best. } 25... Qe5?? { [%eval 0.29] } { Blunder. Rad8 was best. } 26. Rd2?! { [%eval -0.77] } { Inaccuracy. f4 was best. } 26... f5?! { [%eval -0.1] } { Inaccuracy. Rad8 was best. } 27. Re1?? { [%eval -4.48] } { Blunder. f4 was best. } 27... fxe4 { [%eval -4.5] } 28. Kf1 { [%eval -4.63] } { Again I suspect some of these next moves aren't quite right or at least they are in the wrong order } 28... Qf5?? { [%eval -0.43] } { Blunder. Qh5 was best. } 29. Rxe4?? { [%eval -4.89] } { Blunder. Rxd4 was best. } 29... Be5 { [%eval -4.26] } 30. a4 $19 { [%eval -4.32] } { I'm not sure this position is correct but like is a piece up with the continuing attack and white is quite lost } 30... Qxf3?? { [%eval -1.08] } { Blunder. Bf6 was best. } 0-1


[Event "WWoE Jamboree 2025: Oscar Pocknell -- Harry Edge"]
[Site "https://lichess.org/study/khPVCJwn/AHIO7TjS"]
[Result "1-0"]
[Variant "Standard"]
[ECO "D10"]
[Opening "Slav Defense"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Oscar Pocknell -- Harry Edge"]
[UTCDate "2025.01.13"]
[UTCTime "22:44:47"]

{ white was allowed to win a pawn and convert the win. }
1. d4 { [%eval 0.17] } 1... d5 { [%eval 0.24] } 2. c4 { [%eval 0.26] } 2... c6 { [%eval 0.21] } 3. Nc3 $10 { [%eval 0.17] } 3... Bf5?! $18 { [%eval 1.16] } { Inaccuracy. e6 was best. } { It's one of the advantages of the Slav defence that black leaves open the path for the Bc8 to develop either to f5 or g4; however, if black does develop the Bishop early on, then white's Qb3 can be very awkward! } 4. Bf4?! { [%eval 0.38] } { Inaccuracy. Qb3 was best. } (4. Qb3 Nf6 5. Qxb7 Nbd7 6. Nf3 $16) 4... e6 { [%eval 0.43] } 5. Nf3 { [%eval 0.18] } 5... Bb4?! { [%eval 0.82] } { Inaccuracy. Bd6 was best. } 6. e3 { [%eval 0.3] } 6... Nf6 { [%eval 0.43] } 7. Bd3?! { [%eval -0.13] } { Inaccuracy. Qb3 was best. } 7... Bg6 { [%eval 0.36] } 8. O-O { [%eval 0.37] } 8... O-O { [%eval 0.44] } 9. Bxg6 { [%eval 0.56] } 9... hxg6 { [%eval 0.58] } 10. Qb3 { [%eval 0.37] } { Better late than never } 10... Bxc3 { [%eval 0.38] } 11. bxc3 $10 { [%eval 0.3] } { This position is equal however black now allows White to steal the b7 pawn (or overlooks that it is attacked). } 11... Nbd7? { [%eval 1.59] } { Mistake. b6 was best. } (11... b6) 12. Qxb7 { [%eval 1.44] } 12... Qc8?! $18 { [%eval 1.84] } { As in several other games we have seen, black, behind in material, rushes to exchange Queens, which is quite the wrong strategy.
Black needs to keep material on the board to create complications and invite a mistake by the opponent.
With peaceful normal play, white will just win, and that's pretty much what we see in this game. } 13. Qxc8 { [%eval 1.91] } 13... Raxc8 { [%eval 2.14] } 14. c5 { [%eval 2.07] } 14... Ne4 { [%eval 1.85] } 15. Rac1 { [%eval 1.77] } 15... f6 { [%eval 1.84] } 16. Rfd1?! { [%eval 1.07] } { Inaccuracy. h4 was best. } 16... g5 { [%eval 1.13] } 17. Bg3 { [%eval 1.24] } 17... Nxg3?! { [%eval 1.96] } { Inaccuracy. e5 was best. } 18. fxg3 { [%eval 1.37] } 18... g4 { [%eval 1.32] } 19. Nd2 { [%eval 1.03] } 19... e5 { [%eval 1.36] } 20. Rb1 { [%eval 1.46] } 20... Rc7 { [%eval 1.41] } 21. Rb3 { [%eval 1.33] } 21... e4?! { [%eval 2.53] } { Inaccuracy. f5 was best. } 22. Rdb1 { [%eval 2.28] } 22... Ra8?! { [%eval 3.22] } { Inaccuracy. Kf7 was best. } 23. Rb7 { [%eval 3.18] } 23... Rxb7 { [%eval 3.5] } 24. Rxb7 { [%eval 3.19] } 24... Nf8 { [%eval 3.16] } 25. Rc7 { [%eval 3.17] } 25... Rb8 { [%eval 3.3] } 26. Nb3 { [%eval 3.12] } 26... f5 { [%eval 3.56] } 27. Rxc6 { [%eval 3.49] } 27... Rb7?! { [%eval 4.66] } { Inaccuracy. Nh7 was best. } 28. Rd6 { [%eval 4.45] } 28... Rd7 { [%eval 4.64] } 29. Ra6 { [%eval 4.35] } 29... Kf7 { [%eval 4.44] } 30. c6?! { [%eval 3.14] } { Inaccuracy. Na5 was best. } 30... Rc7 { [%eval 2.83] } 31. Ra5 { [%eval 3.21] } 31... Rxc6 { [%eval 3.25] } 32. Rxa7+ { [%eval 3.16] } 32... Kf6 { [%eval 3.52] } 33. Nc5 { [%eval 3.46] } 33... g6 { [%eval 4.26] } 34. Ra8 { [%eval 3.45] } 34... Ne6 { [%eval 4.12] } 35. Ra6 { [%eval 4.0] } 35... Nd8 { [%eval 3.69] } 36. Nd7+ { [%eval 3.03] } 36... Ke7 { [%eval 3.72] } 37. Rxc6 { [%eval 3.38] } 37... Nxc6 { [%eval 3.44] } 38. Nc5?! { [%eval 2.32] } { Inaccuracy. Nb6 was best. } 38... Na5 { [%eval 2.29] } 39. Kf2 { [%eval 2.29] } 39... Kd6 { [%eval 2.16] } 40. Nb3 $18 { [%eval 1.95] } 40... Nxb3?? { [%eval 4.85] } { Blunder. Nc4 was best. } { The position was pretty terrible for black but swapping Knights makes defeat all but certain. You must keep material on the board if you can when you're losing. } 41. axb3 { [%eval 5.16] } 41... Kc6 { [%eval 5.12] } 42. h3 { [%eval 4.89] } 42... gxh3?! { [%eval 6.34] } { Inaccuracy. Kd6 was best. } 43. gxh3 { [%eval 5.59] } 43... g5?! { [%eval 8.06] } { Inaccuracy. Kd6 was best. } 44. h4 { [%eval 7.79] } 44... gxh4 { [%eval 10.27] } 45. gxh4 { [%eval 9.74] } 45... Kd7 { [%eval 9.7] } 46. h5 { [%eval 21.8] } 46... Ke8 { [%eval 73.86] } 47. b4 { [%eval 10.13] } 47... Kf7 { [%eval 9.39] } 48. b5 { [%eval 7.94] } 1-0


[Event "WWoE Jamboree 2025: U18B ___________________"]
[Site "https://lichess.org/study/khPVCJwn/6znCv3PK"]
[Result "*"]
[Variant "Standard"]
[ECO "?"]
[Opening "?"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "U18B ___________________"]
[UTCDate "2025.01.13"]
[UTCTime "20:17:08"]

 *


[Event "WWoE Jamboree 2025: Leon Nelson -- Daniel Smith"]
[Site "https://lichess.org/study/khPVCJwn/kCiZbgdm"]
[Result "1-0"]
[Variant "Standard"]
[ECO "A15"]
[Opening "English Opening: Anglo-Indian Defense"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Leon Nelson -- Daniel Smith"]
[UTCDate "2025.01.15"]
[UTCTime "18:17:17"]

{ White played a structure I've often used myself, the Botvinnik English, and they used the closed centre as cover to start a kingside attack. You were never able to find enough activity or ideas to distract them from this plan, but if you look at the notes there are some ideas for next time. }
1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. e4 d6 6. Nge2 $10 Nbd7 $14 (6... c5!? { [%cal Gg7b2] } 7. O-O Nc6 8. d3 { [%csl Gd4][%cal Gc6d4] } 8... Nd4 (8... Ne8 9. f4 $10 Nd4 (9... Bg4 { [%csl Ge2,Gd4] } 10. h3 Bxe2 11. Nxe2 Nc7 { [%csl Gb4,Ga5][%cal Gb7b5,Ga7a5] } 12. g4 Ne6 { [%csl Gd4][%cal Ge6d4] } 13. f5 Ned4 { [%csl Gf6,Ge5] } 14. g5 $15 { [%csl Ge2,Gd4] } 14... Nxe2+ (14... Ne5) (14... Be5) 15. Qxe2 Nd4)) 9. Nxd4 cxd4 10. Ne2 $14) (6... e5 7. O-O Be6 8. d3 Qd7 $14) 7. O-O Ne5 { This just encourages white spawns to lunge forward. } 8. d3 $14 { [%csl Gg2,Gf4][%cal Gf2f4] } 8... Nh5? $16 (8... c5) 9. f4 Nc6 10. f5 Bd7 11. g4 Nf6 $16 { Now it's very hard for black to deter white from their plan. } 12. Nf4 h6 13. h4 Ne5 14. g5 hxg5 15. hxg5 Nh5 (15... Nh7!? { Might have helped } { [%cal Gd3d4,Ge4e5,Gf5f6] }) 16. Nxh5 gxh5 17. Qxh5 $18 { Now black is in huge trouble } 17... Nxd3 18. Rf3 Bd4+ 19. Be3 Bxe3+ 20. Rxe3 Nf4 21. Qh4 e5 22. Rf1 Qe7 23. Rxf4 exf4 24. Nd5 Qe5 25. Nf6+ Qxf6 26. gxf6 fxe3 27. Qg5+ { Goodnight, nurse. } 1-0


[Event "WWoE Jamboree 2025: Daniel Smith -- Yuxuan Liu"]
[Site "https://lichess.org/study/khPVCJwn/gMVzZ7R9"]
[Result "0-1"]
[Variant "Standard"]
[ECO "B23"]
[Opening "Sicilian Defense: Closed"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Daniel Smith -- Yuxuan Liu"]
[UTCDate "2025.01.15"]
[UTCTime "18:15:55"]

{ You played a slightly inaccurate opening but black was no more accurate and you ended up in a roughly equal position but sadly blundered. }
1. e4 c5 (1... e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 $14 { Is the well known Steinitz variation of the French defence. compared with variation in your game, white has gained a tempo by chasing the black knight from f6, and hasn't lost a tempo playing the pawn first to d3 and only then to d4. }) 2. Nc3 e6 3. f4 d5 4. e5?! (4. Nf3! { Is the way Jones plays it } 4... dxe4 (4... d4 5. Bb5+ Nd7 6. Ne2 { Sveshnikov, Evgeny - Deepan Chakkravarthy, J., 1-0, Dubai op 6th, 2004, https://lichess.org/WqVq0JML }) (4... Nc6 5. Bb5 Ne7 6. exd5 Nxd5 (6... exd5 7. Qe2 { Jones, Gawain C - Nataf, Igor Alexandre, 1/2-1/2, EU-ch 8th, 2007, https://lichess.org/WuTvHVQz }) 7. Ne5 { Hebden, Mark - Kwiatkowski, Feliks J, 1-0, BCF-ch, 1986, https://lichess.org/Kge1njsR }) 5. Nxe4 { Jones, Gawain C - Rublevsky, Sergei, 1-0, EU-ch blitz 29th, 2010, https://lichess.org/stzmLeQp }) 4... Nc6 5. Nf3 a6 6. a4 (6. d4 b5 7. Be3) 6... Nge7 7. d3 $15 { [%cal Gd3d4,Ge4e5] } 7... Nb4?! $10 { The square b4 is no doubt an outpost for this black knight but this seems premature. } 8. Be2 b6 9. O-O Bb7 10. d4 $15 { A fairly typical French sort of position, which, because of the differences described above, is a little bit better for black. } 10... Nec6 11. Be3 cxd4 12. Nxd4 Bc5 13. Rc1 Rc8 14. Qd2 Nxd4 15. Bxd4 O-O 16. f5! $15 { Definitely the right plan in these positions, although you're not so well placed to make it work here. } 16... Bxd4+ 17. Qxd4 Nc6 18. Qf4 exf5 19. Qxf5 Nd4 20. Qg4! $10 (20. Qf2!? Nxe2+ 21. Nxe2 { [%csl Gd4] } 21... Rc4 22. b3 $15) 20... Nxe2+ 21. Nxe2 { [%csl Gb7] } 21... Rc4 22. Rf4?! (22. Nd4! $10 { This odd self-pinning move is best, with equal chances. } 22... Rxa4? 23. e6! $14 $40 { [%csl Gc3][%cal Gc2c3] }) 22... Qe7 { Now you play a couple of inaccurate moves and one blunder. } (22... Qe8 { [%cal Ge8e5,Ge8a4] }) (22... Re4 { [%csl Ge5,Ge2] } 23. Nd4 Rxe5) 23. Rxc4?! $15 dxc4 24. Nc3?! $17 Qxe5 25. Qxc4?? $19 Qe3+ 0-1


[Event "WWoE Jamboree 2025: Daniel Smith -- Freddie Pick"]
[Site "https://lichess.org/study/khPVCJwn/e3SqinpE"]
[Result "0-1"]
[Variant "Standard"]
[ECO "B23"]
[Opening "Sicilian Defense: Grand Prix Attack"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Daniel Smith -- Freddie Pick"]
[UTCDate "2025.01.13"]
[UTCTime "23:30:58"]

{ Black played a sneaky queen move which had two ideas -- only one of which you spotted. }
1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bb5 Nd4 6. O-O (6. Nxd4 cxd4 7. Ne2 Qb6 8. Bd3) 6... e6 7. Nxd4 $10 (7. e5!? { Gawain Jones has played instead } 7... a6 8. Bd3 d5 9. Nxd4 cxd4 10. Ne2 Qb6 11. Qe1 Ne7 12. b3 Nc6 13. Bb2 O-O 14. Nxd4 Nb4 (14... Nxd4 15. Qe3) 15. Qe3 Nxd3 16. Qxd3 Bd7 17. Qe3 a5 18. Ba3 Rfc8 19. Be7 a4 20. b4 a3 21. c3 Rc4 22. Rf3 Bf8 23. Bf6 Bxb4 24. Rh3 h5 25. f5 Rxd4 26. Qh6 { Jones, Gawain C - Gelashvili, Tamaz, 1-0, EU-chT (Men) 16th, 2007, https://lichess.org/kNaF0dyG } { [%csl Gg7,Gh8] }) 7... cxd4 8. Ne2 Qb6 $10 { With two threats, one of which you spotted. } 9. Bc4?? (9. Bd3! $14 { [%csl Gc3,Gh1][%cal Gc2c3,Gd4c3,Gb2c3,Gg1h1] }) 9... d3+ { Tactic: discovery } 10. Kh1 { Well that was a shame. If you want to see some model games by Gawain Jones, who's our current leading exponent of the Grand Prix attack, you can visit:
https://www.chessgames.com/perl/chess.pl?yearcomp=exactly&year=&playercomp=either&pid=&player=jones&pid2=&player2=&movescomp=exactly&moves=&opening=&eco=B23&result=1-0 } 0-1


[Event "WWoE Jamboree 2025: Ben Darlington -- James Thomas"]
[Site "https://lichess.org/study/khPVCJwn/Hn6MNDQX"]
[Result "0-1"]
[Variant "Standard"]
[ECO "A15"]
[Opening "English Opening: Anglo-Indian Defense"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Ben Darlington -- James Thomas"]
[UTCDate "2025.01.14"]
[UTCTime "23:51:00"]

{ I don't have much of this game but what I have revealed no problems on your part. I'm not a huge fan of this very solid but rather unenterprising set up for white. }
1. c4 { [%eval 0.12] } 1... Nf6 { [%eval 0.21] } 2. g3 { [%eval 0.11] } 2... g6 { [%eval 0.25] } 3. Bg2 { [%eval 0.18] } 3... Bg7 { [%eval 0.34] } 4. Nc3 { [%eval 0.12] } 4... O-O { [%eval 0.28] } 5. e3 { [%eval 0.0] } 5... d6 { [%eval 0.21] } 6. Nge2 { [%eval 0.06] } 6... Nbd7 { [%eval 0.39] } 7. d4 { [%eval 0.25] } 7... e5 $14 { [%eval 0.25] } 8. dxe5?! $10 { [%eval -0.03] } (8. O-O Re8 9. b3 $14) 8... Nxe5?! $14 { [%eval 0.23] } (8... dxe5 $10) 9. b3 { [%eval 0.31] } 9... a6 { [%eval 0.48] } { "h4" } 10. O-O { [%eval 0.36] } 10... c6 { [%eval 0.9] } 11. Ba3 { [%eval 0.51] } 11... Ne8 { [%eval 0.56] } 12. Rc1 { [%eval 0.53] } 12... Bf5 $14 { [%eval 0.81] } { This is all going quite well for white and you had a chance to consolidate your advantage here. } (12... Bg4 13. Ne4) 13. Ne4?! { [%eval 0.0] } { Inaccuracy. Nd4 was best. } (13. Nd4 Bg4 14. f3 Bd7 15. f4 Ng4 16. Qd2 $16) 13... Bxe4 { [%eval 0.36] } 14. Bxe4 { [%eval 0.36] } 14... Qa5 { [%eval 0.38] } 15. Bb2 $14 { [%eval 0.47] } { This position is still slightly better for white; I didn't see what happened in the rest of the game. } 0-1


[Event "WWoE Jamboree 2025: Bence Szakmary -- Ben Darlington"]
[Site "https://lichess.org/study/khPVCJwn/BOYmMiy1"]
[Result "1-0"]
[Variant "Standard"]
[ECO "B06"]
[Opening "Modern Defense"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Bence Szakmary -- Ben Darlington"]
[UTCDate "2025.01.14"]
[UTCTime "23:54:50"]

{ White quickly whipped up a storming attack against your King, which required a bit of defensive skill as well as a bit of luck to survive. But survive you did, only to blunder into a lost position just when chances were nearly even. }
1. e4 { [%eval 0.18] } 1... g6 { [%eval 0.48] } (1... d6 2. d4 Nf6 3. Nc3 g6 { is the usual Pirc move order, and if there isn't anything you are trying to avoid, it's easiest and best. }) 2. d4 { [%eval 0.48] } 2... Bg7 { [%eval 0.48] } { The Modern Defence, which can transpose into several other systems, but most often the Pirc Defence. } 3. Be3 { [%eval 0.27] } (3. c4 { gets you into Queen's-side positions, but perhaps not your usual defence to 1.d4 }) (3. f4 { is a headache to be faced only with the Modern move-order. }) 3... d6 { [%eval 0.53] } (3... d5) (3... c5) 4. Nc3 { [%eval 0.46] } 4... Nf6 { [%eval 0.49] } { We're now in a Pirc Defence } 5. f3 { [%eval 0.47] } 5... O-O?! { [%eval 0.52] } { I don't think this is a bad move, exactly, but it does nothing to distract White from their stereotyped attacking plans. } (5... c6 { might be best, delaying castling and preparing ...b5, with much more immediate counterplay than in the game. }) (5... a6) 6. Qd2 { [%eval 0.42] } 6... e5 { [%eval 0.8] } 7. Nge2 $16 { [%eval 0.81] } 7... Nbd7 { [%eval 0.91] } 8. O-O-O { [%eval 1.0] } { White is playing the 'Yugoslav Attack' from the Dragon Sicilian against the Pirc Defence. In the Dragon, Black has to attack fiercely on the Queen's-side to have any chance of survival. } 8... b6?! $18 { [%eval 1.76] } { Inaccuracy. c6 was best. } { And that, I'm going to say, is not fierce at all. } 9. g4! { [%eval 1.75] } { Ready or not, here I come... } 9... Bb7?! $18 { [%eval 2.5] } { Inaccuracy. a6 was best. } 10. d5 { [%eval 2.57] } 10... a6 { [%eval 2.87] } 11. Ng3 { [%eval 2.77] } 11... Rc8 { [%eval 3.33] } 12. h4 { [%eval 3.23] } 12... h5?! { [%eval 4.4] } { Inaccuracy. c6 was best. } { That's usually considered a fair try in the Dragon. Traditional advice is not to weaken your pawns in front of your King when you are being attacked, but if it delays your opponent's attack by a precious few moves, then it might be worth it. } 13. gxh5 { [%eval 4.75] } 13... gxh5?! { [%eval 6.33] } { Inaccuracy. b5 was best. } 14. Nf5 { [%eval 5.11] } 14... Kh8 { [%eval 4.85] } 15. Rg1 { [%eval 4.56] } (15. Nxg7 Kxg7 16. Bh6+ { wins the exchange, but White is after bigger prey. }) 15... Rg8 { [%eval 4.66] } 16. Bh6 { [%eval 3.98] } (16. Rxg7 Rxg7 17. Nxg7 Kxg7 18. Bh3 $18 { also looks good for White }) 16... Bxh6?! { [%eval 5.97] } { Inaccuracy. Bf8 was best. } 17. Qxh6+ { [%eval 5.95] } 17... Nh7 $18 { [%eval 5.82] } 18. Rxg8+? { [%eval 3.51] } { Mistake. Rg7 was best. } (18. Rg7! { is crushing } 18... Nf6 19. Rxf7 Rb8 20. f4 $18) 18... Qxg8 { [%eval 3.44] } { Black is holding on... } 19. Ne7?? $16 { [%eval 1.24] } { Blunder. Bh3 was best. } { Perhaps White thought they were winning the exchange, but this is a blunder, giving Black welcome relief. } 19... Qf8 { [%eval 1.21] } 20. Qxf8+ { [%eval 1.33] } 20... Rxf8 { [%eval 1.22] } 21. Bh3?! $14 { [%eval 0.57] } { Inaccuracy. Ne2 was best. } 21... Nc5?? $18 { [%eval 4.6] } { Blunder. Re8 was best. } { The Knight can hop out, but has to hop straight back again. } (21... Re8 22. Nf5 Ndf8 { and Black is close to equality. }) 22. b4 { [%eval 4.7] } 22... Re8 { [%eval 4.67] } { White has no useful desperado move with the Knight, but } 23. bxc5 { [%eval 4.61] } 23... Rxe7 { [%eval 4.97] } 24. c6! { [%eval 4.9] } 24... Ba8 { [%eval 4.81] } 25. Ne2 $18 { [%eval 4.27] } { White isn't actually ahead in material, but the Black Bishop on a8 can play no further part in the game, and so White is effectively playing with an extra piece. } 1-0


[Event "WWoE Jamboree 2025: Ben Darlington Jack wills"]
[Site "https://lichess.org/study/khPVCJwn/34hKxP95"]
[Result "0-1"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[Variant "Standard"]
[ECO "A15"]
[Opening "English Opening: Anglo-Indian Defense"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Ben Darlington Jack wills"]
[UTCDate "2025.01.16"]
[UTCTime "21:41:11"]

{ Very much a game of two halves.
Black lost a pawn early on which could have been decisive but material equality was soon restored and an interesting positional battle followed, where White had the advantage for the most part. Black held on and eventually found a way through, when White's defences collapsed. }
1. c4 { [%eval 0.12] } 1... Nf6 { [%eval 0.21] } 2. g3 { [%eval 0.11] } 2... g6 { [%eval 0.25] } 3. Bg2 { [%eval 0.18] } 3... Bg7 { [%eval 0.34] } 4. Nc3 { [%eval 0.12] } 4... O-O { [%eval 0.28] } 5. e3 { [%eval 0.0] } 5... e5 { [%eval 0.17] } 6. Nge2 { [%eval 0.14] } 6... d6 { [%eval 0.1] } 7. O-O $10 { [%eval 0.05] } 7... Be6?! $16 { un defending the B Pawn
this could have lost on the spot } { Inaccuracy. Re8 was best. } { [%eval 0.92] } 8. Bxb7 { [%eval 1.06] } 8... Nbd7 { [%eval 1.13] } 9. Bg2 { [%eval 0.85] } (9. Bxa8 Qxa8 10. f3 Bxc4) 9... Rb8?! { Inaccuracy. Bxc4 was best. } { [%eval 1.71] } 10. b3 { [%eval 1.6] } 10... Nh5?! { Inaccuracy. Re8 was best. } { [%eval 2.22] } 11. Bb2?! $16 { Inaccuracy. d4 was best. } { [%eval 1.32] } (11. d4! $18 { threatens to embarrass the black bishop }) 11... Bxc4 { colon pin } { [%eval 1.25] } 12. bxc4 { [%eval 1.27] } 12... Rxb2 $16 { White no longer has the P but has the better position } { [%eval 1.29] } 13. Nb5 { [%eval 0.73] } 13... a6 { [%eval 0.79] } 14. Na7 { [%eval 0.42] } 14... Nc5 { [%eval 0.41] } 15. Nc6 { [%eval 0.15] } 15... Qd7 { [%eval 0.46] } 16. Nc3?! { Inaccuracy. d4 was best. } { [%eval -0.2] } 16... Rb6 { [%eval 0.22] } 17. Na5 { [%eval 0.01] } 17... Nf6 { [%eval 0.38] } 18. Rb1 { [%eval 0.39] } 18... Rfb8 { [%eval 0.86] } 19. Rxb6 { [%eval 0.83] } 19... Rxb6 { [%eval 0.99] } 20. d4 { [%eval 1.04] } 20... exd4 { [%eval 1.03] } 21. exd4 { [%eval 0.99] } 21... Ne6 { [%eval 1.18] } 22. Bh3 { [%eval 1.2] } 22... d5 $16 { White is still better here, but the next move gives away the advantage. } { White is still better here, but the next move gives away the advantage. } 23. c5?! $10 { Inaccuracy. Na4 was best. } { [%eval 0.08] } 23... Rb8 { [%eval 0.16] } 24. Re1 { [%eval 0.17] } 24... c6? { Mistake. Re8 was best. } { [%eval 1.3] } 25. Na4?! { Inaccuracy. Bxe6 was best. } { [%eval 0.45] } (25. Bxe6 fxe6 26. Qe2 { forks e6 and a6 }) 25... Qc7 { [%eval 0.43] } 26. Nb6 { [%eval 0.4] } 26... Ne4 { [%eval 0.52] } 27. Bxe6 { [%eval 0.45] } 27... fxe6 { [%eval 0.5] } 28. Qg4? { Mistake. Kg2 was best. } { [%eval -0.99] } 28... Qf7 $15 { [%eval -1.03] } 29. Re2?? $19 { Blunder. Rxe4 was best. } { [%eval -3.14] } 29... Bxd4 { [%eval -3.4] } 30. Qf4 { [%eval -3.38] } 30... Qxf4 { [%eval -3.11] } 31. gxf4 { [%eval -3.4] } 31... Bxc5 { [%eval -3.38] } 32. Nd7 { [%eval -3.36] } 32... Rb1+ { [%eval -3.33] } 33. Kg2 { [%eval -3.0] } 33... Bxf2 $19 { [%eval -3.06] } 34. Nf6+? $19 { Mistake. Nxc6 was best. } { [%eval -5.12] } 34... Nxf6 { [%eval -5.08] } 35. Kxf2 { [%eval -5.02] } 35... Ne4+ { [%eval -4.94] } 36. Kg2 { [%eval -5.16] } 36... c5 { [%eval -5.04] } 37. Nb3 { [%eval -5.51] } 37... Kf7 { [%eval -5.39] } 38. Rc2 { [%eval -5.51] } 38... c4 { [%eval -5.54] } 39. Nd4 { [%eval -5.42] } 39... Rd1 { [%eval -5.36] } 40. Nf3 { [%eval -5.87] } 40... Kf6 { [%eval -5.93] } 41. a4 { [%eval -5.96] } 41... Ra1 { [%eval -5.97] } 42. Nd4 { [%eval -6.03] } 42... Rxa4 { [%eval -6.0] } 43. f5 { [%eval -7.31] } 43... gxf5 { [%eval -7.32] } 44. h4 { [%eval -7.49] } 44... c3 { TACTIC: discovery } 45. h5? { Checkmate is now unavoidable. Ne2 was best. } { [%eval #-17] } 45... Rxd4 { [%eval -26.01] } 0-1


[Event "WWoE Jamboree 2025: Viacheslav Ovcharenko -- Jamie Glasson"]
[Site "https://lichess.org/study/khPVCJwn/CFzsMFdx"]
[Result "1-0"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[Variant "Standard"]
[ECO "C45"]
[Opening "Scotch Game: Potter Variation"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Viacheslav Ovcharenko -- Jamie Glasson"]
[UTCDate "2025.01.16"]
[UTCTime "21:21:51"]

{ White didn't get much out of the opening and black came up with an interesting try for the initiative. After a muddled stage featuring errors on both sides, White emerged a pawn ahead, upon which Black swapped everything off into a lost endgame. It's become traditional for one of our A team players to lose to a B team player, and I thought this was going to be it! }
1. e4 { [%eval 0.18] [%eval 0.18] } 1... e5 { [%eval 0.21] [%eval 0.21] } 2. Nf3 { [%eval 0.13] [%eval 0.13] } 2... Nc6 { [%eval 0.17] [%eval 0.17] } 3. d4 { [%eval 0.05] [%eval 0.0] } 3... exd4 { [%eval 0.04] [%eval 0.04] } 4. Nxd4 { [%eval 0.06] [%eval 0.06] } 4... Bc5 { [%eval 0.21] [%eval 0.21] } 5. Nb3 { [%eval 0.17] [%eval 0.17] } 5... Bb6 { [%eval 0.18] [%eval 0.18] } 6. Nc3 { [%eval 0.13] [%eval 0.13] } 6... Nf6 { [%eval 0.12] [%eval 0.12] } 7. Qe2 $10 { This is a move recommended by theory and very often played but it doesn't seem very promising for white } { [%eval 0.22] } (7. a4 { Adams, Michael - Wells, Peter K, 1-0, Dublin zt, 1993, https://lichess.org/aYpd4eLE } { Was all the rage when I was a boy }) 7... O-O { [%eval 0.28] [%eval 0.28] } 8. Be3 { [%eval -0.16] [%eval -0.18] } 8... Re8 { [%eval 0.31] [%eval 0.26] } 9. f3 { [%eval 0.19] [%eval 0.43] } 9... d5!? { This move starts an interesting messy phase where the right moves for both sides are not obvious } { [%eval 0.2] } 10. O-O-O { [%eval 0.43] [%eval 0.38] } 10... d4 $14 { it's about equal.
The d-pawn is being held up by magic } { it's about equal.
The d-pawn is being held up by magic } 11. Na4? $17 { Mistake. Qe1 was best.
Black has couple of interesting tactics here } { [%eval -1.0] } 11... Be6?? $14 { [%eval 0.73] } { Blunder. Nxe4 was best. } { [%eval 0.81] } (11... Nxe4! 12. fxe4 Rxe4 { Tactic: pin }) (11... Rxe4 12. fxe4 Bg4! { Tactic: skewer }) 12. Nxb6?! $10 { [%eval -0.06] } { Inaccuracy. Kb1 was best. } { [%eval -0.03] } 12... axb6 { [%eval -0.03] [%eval -0.24] } 13. a3?? $19 { [%eval -2.88] } { Blunder. Kb1 was best. } { [%eval -2.81] } 13... Bxb3 { [%eval -2.91] [%eval -2.85] } 14. cxb3 { Now, to keep the advantage, black needs to spot the tactic pointed out earlier. } { Now, to keep the advantage, black needs to spot the tactic pointed out earlier. } 14... Re7?? $16 (14... Qd6 $10) 15. b4?? $19 (15. Bf2! $14) 15... Rd7?? $16 (15... Nxe4! $19) 16. Bg5 $10 { Now White has hopes of surrounding and capturing the d-pawn. As Nimzowitsch used to say: restrain, blockade, destroy! } { [%eval 0.39] } 16... Ne5 { [%eval 0.43] [%eval 0.36] } 17. f4 { [%eval 0.36] [%eval 0.11] } 17... d3 { [%eval 0.56] [%eval 0.07] } 18. Qd2 { [%eval 0.18] [%eval 0.13] } 18... Nc4 { [%eval 0.17] [%eval 0.06] } 19. Qc3 $10 { [%eval 0.43] [%eval 0.09] } 19... Ne3?! { [%eval 0.86] } { Inaccuracy. Nxe4 was best. } { [%eval 0.83] } (19... Nxe4 20. Qxc4 Rd4 21. Bxd8 Rxc4+ 22. Kb1 Rxd8 $10) 20. Rxd3 $16 { White has succeeded in their aim } { [%eval 0.79] } 20... Nxf1 { [%eval 0.83] [%eval 0.79] } 21. Rxd7 { [%eval 0.85] [%eval 0.74] } 21... Qxd7 { [%eval 0.95] [%eval 0.82] } 22. Bxf6 $16 { Black is by no means lost here, but their next move loses the initiative allowing white to take over. } { Black is by no means lost here, but their next move loses the initiative allowing white to take over. } 22... Qd2+?? $18 { [%eval 2.91] } { Blunder. gxf6 was best. } { [%eval 3.19] } 23. Qxd2 { [%eval 3.03] } 23... Nxd2 { [%eval 3.12] } 24. Kxd2 { [%eval 3.12] } 24... gxf6 { [%eval 3.06] } 25. Rd1 $18 { White is a pawn ahead here and Black's only chance is to stay in the Rook endgame. } { White is a pawn ahead here and Black's only chance is to stay in the Rook endgame. } 25... Rd8+?? { Interestingly, Stockfish doesn't recognise the Rook exchange as a mistake -- perhaps because white is winning anyway -- but my advice to black is still keep the rooks on because they are a drawing factor and the king and pawn ending is just lost. } { Interestingly, Stockfish doesn't recognise the Rook exchange as a mistake -- perhaps because white is winning anyway -- but my advice to black is still keep the rooks on because they are a drawing factor and the king and pawn ending is just lost. } 26. Ke2 { [%eval 2.99] } 26... Rxd1 { [%eval 3.74] } 27. Kxd1 { [%eval 3.71] } 27... Kf8 { [%eval 3.6] } 28. Kd2 { [%eval 3.58] } 28... Ke8 { [%eval 3.8] } 29. Kd3 { [%eval 3.55] } 29... c6 { [%eval 4.3] } 30. g4 { [%eval 4.14] } 30... Kd7 { [%eval 4.38] } 31. h4 { [%eval 4.28] } 31... Ke6 { [%eval 4.93] } 32. Kd4 { [%eval 4.98] } 32... Ke7 { [%eval 4.79] } 33. a4 { [%eval 4.61] } 33... Ke6 $18 { Both sides have strengthened their position as much as they can and white now needs to find a way through which they do what accurately } { [%eval 4.98] } 34. a5 { [%eval 4.82] } 34... bxa5?! { Inaccuracy. Ke7 was best. } { [%eval 6.88] } 35. bxa5 { [%eval 6.46] } 35... Kd7 { [%eval 7.11] } 36. Kc5 { [%eval 7.51] } 36... Kc7 { [%eval 7.6] } 37. b4 { [%eval 7.59] } 37... h6 { [%eval 8.35] } 38. g5 { [%eval 8.04] } 38... hxg5 { [%eval 9.26] } 39. fxg5 { [%eval 8.85] } 39... fxg5 { [%eval 10.02] } 40. hxg5 { [%eval 9.98] } 40... Kd7 { [%eval 9.41] } 41. Kb6 { [%eval 9.6] } 41... Kc8 { [%eval 10.29] } 42. e5 $18 { [%eval 9.45] } 42... Kb8? { Checkmate is now unavoidable. Kd7 was best. } { [%eval #15] } 43. e6 { [%eval #14] } 43... fxe6 { [%eval #13] } 44. g6 { [%eval #13] } 44... e5 { [%eval #12] } 45. g7 { [%eval #11] } 45... Kc8 { [%eval #11] } 46. g8=Q+ { [%eval #7] } 46... Kd7 { [%eval #8] } 47. Kxb7 { [%eval #8] } 47... e4 { [%eval #6] } 48. Qg4+ $18 { [%eval #6] } 1-0


[Event "WWoE Jamboree 2025: Jamie Glasson -- Toby Gakrenhof"]
[Site "https://lichess.org/study/khPVCJwn/Go8c8cTL"]
[Result "0-1"]
[Variant "Standard"]
[ECO "A54"]
[Opening "Old Indian Defense: Tartakower-Indian"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Jamie Glasson -- Toby Gakrenhof"]
[UTCDate "2025.01.15"]
[UTCTime "00:02:32"]

{ That was a shame: you had too long spells of advantage but fell for a simple pawn fork at the end }
1. d4 { [%eval 0.17] } 1... Nf6 { [%eval 0.19] } 2. c4 { [%eval 0.18] } 2... d6 { [%eval 0.47] } 3. Nf3 { [%eval 0.5] } (3. Nc3 e5 4. Nf3 e4 5. Nd2 Bf5 6. Qb3 $16 { Is one of the main lines, with advantage to white }) 3... Bg4 { [%eval 0.59] } 4. Nc3 { [%eval 0.68] } 4... Nbd7 { [%eval 0.59] } 5. Bf4 { [%eval 0.39] } (5. e4! $14 { is surely best, gaining space }) 5... c5 $14 { [%eval 0.64] } { The Home-Made Defence... none of Black's moves are bad, but it's a lot easier to come up with moves and especially plans in systems that have been tried before. } 6. e3 { [%eval 0.42] } 6... Qb6 $14 { [%eval 0.63] } 7. b3?! $15 { [%eval -0.36] } { Inaccuracy. Be2 was best. } 7... a6? { [%eval 0.94] } { Mistake. e5 was best. } (7... e5) 8. Be2 $16 { [%eval 0.99] } 8... g6 { [%eval 1.15] } 9. O-O { [%eval 1.08] } 9... Bg7 { [%eval 1.12] } 10. Rc1 { [%eval 1.1] } 10... O-O $16 { [%eval 1.19] } 11. dxc5?! $14 { [%eval 0.36] } { Inaccuracy. h3 was best. } (11. h3 Bxf3 12. Bxf3 Nh5) 11... Nxc5 { [%eval 0.39] } 12. Nd5? $17 { [%eval -1.0] } { Mistake. Bg5 was best. } 12... Nxd5 { [%eval -0.98] } 13. Qxd5 { [%eval -1.14] } 13... Qc6?! $15 { [%eval -0.3] } { Inaccuracy. Qa5 was best. } 14. Qg5 { [%eval -0.25] } 14... Qd7 { [%eval -0.27] } 15. Rfd1?! $17 { [%eval -0.96] } { Inaccuracy. Qh4 was best. } 15... Bf6?! $10 { [%eval 0.07] } { Inaccuracy. Bf5 was best. } 16. Qd5 { [%eval 0.0] } 16... Be6 $14 { [%eval 0.37] } 17. Qd2 { [%eval 0.25] } 17... a5 { [%eval 0.31] } 18. Nd4 { [%eval 0.3] } { There is an outline of a tactic here: if the black e prawn jumps to e5 you will lose a piece. } 18... Ne4 { [%eval 0.54] } 19. Qc2 { [%eval 0.53] } 19... Nc5 { [%eval 0.51] } 20. Bf3 { [%eval 0.52] } 20... Bg4 { [%eval 0.46] } { Now the E pawn is free } 21. Bxg4 { [%eval 0.43] } 21... Qxg4 $14 { [%eval 0.37] } 22. Qe2? $17 { [%eval -0.82] } { Mistake. h3 was best. } 22... Qxe2 { [%eval -0.76] } 23. Nxe2 { [%eval -0.56] } 23... Rfd8 $15 { [%eval -0.44] } 24. Nd4?? $19 { [%eval -3.28] } { Blunder. Bh6 was best. } 24... e5 $19 { [%eval -3.28] } 0-1


[Event "WWoE Jamboree 2025: Jamie Glasson -- Alex Curey"]
[Site "https://lichess.org/study/khPVCJwn/duRCMRIk"]
[Result "0-1"]
[Variant "Standard"]
[ECO "D31"]
[Opening "Semi-Slav Defense: Noteboom Variation"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Jamie Glasson -- Alex Curey"]
[UTCDate "2025.01.15"]
[UTCTime "00:12:21"]

{ You seemed to lose the thread of the game early on -- perhaps because you didn't know a plan to play against black's unusual variation -- and I'm sorry to say it went from bad to worse. Have a look at Marshall's gambit for next time or learn one of the main lines. }
1. d4 { [%eval 0.17] } 1... d5 { [%eval 0.24] } 2. c4 { [%eval 0.26] } 2... e6 { [%eval 0.27] } 3. Nc3 { [%eval 0.18] } 3... c6 { [%eval 0.26] } { If blacks c-pawn goes to c6 in the Queen's gambit it always threatens to take and to keep a pawn on c4, as it supports ...b7-b5. The variation black chooses in this game makes a particular point of this idea. } 4. Nf3 { [%eval 0.18] } (4. e4 { Is a gambit due to frank Marshall. The main line goes } 4... dxe4 5. Nxe4 Bb4+ 6. Bd2 Qxd4 7. Bxb4 Qxe4+ { And white has full compensation and a death grip on the dark squares after either } 8. Be2 (8. Ne2)) 4... dxc4 { [%eval 0.38] } { This introduces the Noteboom variation, sometimes also named after Gerald Abrahams. } 5. e4 { [%eval 0.02] } (5. a4 { The mad main lines go } 5... Bb4 6. e3 b5 7. Bd2 a5 8. axb5 Bxc3 9. Bxc3 cxb5 10. b3 Bb7 (10... b4 11. Bxb4) 11. bxc4 b4 12. Bb2 Nf6 13. Bd3 Nbd7 { Was played several times by the young Vladimir kramnik } (13... O-O 14. O-O (14. Qc2) 14... Nbd7 { Hammer, Jon Ludvig - Nakamura, Hikaru, 0-1, Norway Chess, 2013, https://lichess.org/a9xGOM0D }) 14. O-O (14. Qc2 { Neverov, Valeriy - Kramnik, Vladimir, 0-1, URS-ch58, 1991, https://lichess.org/F9kFRFqD }) 14... O-O { Donchenko, Alexa - Firouzja, Alireza, 0-1, 83rd Tata Steel Masters, 2021, https://lichess.org/JE2AxxJs } { And I see top grandmasters still dabble in it }) 5... b5 { [%eval 0.0] } 6. a4 { [%eval 0.0] } 6... Bb4 { [%eval 0.16] } 7. Qc2 $10 { [%eval -0.03] } (7. Bd2) 7... Nf6 { [%eval 0.0] } 8. Bg5?! $15 { [%eval -0.47] } (8. Be2! $10) 8... h6 { [%eval -0.51] } 9. Be3 { [%eval -0.73] } 9... Bb7 { [%eval -0.8] } 10. Be2 $17 { [%eval -0.77] } 10... O-O?! $15 { [%eval -0.33] } { Hardly a bad move, but black keeps more advantage by playing on the queen's side. } (10... a6) (10... Nbd7) 11. O-O { [%eval -0.43] } 11... Bxc3?! { [%eval -0.3] } { I think black can keep all the advantages of their position as well as the Bishop pair } (11... a6) 12. bxc3 { [%eval -0.24] } 12... a6 $10 { [%eval -0.32] } { White has yet to regain the pawn, but has a strong centre as some compensation, as well as the Bishop pair. } 13. Rfe1 { [%eval -0.54] } 13... Nbd7 { [%eval -0.56] } 14. Reb1 $17 { [%eval -1.1] } 14... Qc7?! $15 { [%eval -0.47] } { Inaccuracy. c5 was best. } { At the moment black can't do anything with their queenside majority, so it's a good time to try and get your centre and king side pawns moving. } 15. axb5?! $17 { [%eval -1.18] } { Inaccuracy. Nd2 was best. } (15. Nd2 Rfb8 16. f3) 15... cxb5 { [%eval -1.12] } 16. Nd2 { [%eval -1.23] } { Well done — quite the right plan } 16... Nb6 { [%eval -1.13] } 17. f3 { [%eval -1.17] } 17... Bc6 { [%eval -0.84] } 18. Bd1 { [%eval -1.03] } 18... Nfd7 { [%eval -0.67] } 19. Ra3?! $19 { [%eval -1.43] } { Inaccuracy. Nf1 was best. } 19... f5 { [%eval -1.41] } { This position is better for black, but it's not clear how they should proceed . Under these circumstances, you're probably best off sitting back and waiting for them to reveal their plan. } 20. e5? { [%eval -3.05] } { Mistake. Raa1 was best. } { This gives away the d5 square and now the black Knights can become active. } 20... Nd5 { [%eval -2.9] } 21. Nf1 { [%eval -2.83] } 21... N7b6 { [%eval -2.89] } 22. Rba1?! $19 { [%eval -3.72] } { Inaccuracy. Bd2 was best. } { White has successfully doubled rooks on the half open a file but I'm not sure that's doing you any good } 22... Bb7?! { [%eval -2.39] } { Inaccuracy. a5 was best. } (22... a5! { Emphasises how little white has achieved by doubling the rooks } 23. Rxa5 Rxa5 24. Rxa5 Na4) 23. Bd2 { [%eval -2.35] } 23... Qe7 { [%eval -2.3] } 24. Ne3 { [%eval -2.62] } 24... Nf4 { [%eval -2.43] } 25. g3 { [%eval -2.53] } 25... Qg5? { [%eval -1.16] } { Mistake. Nfd5 was best. } 26. Ng2?? { [%eval -3.36] } { Blunder. Kf1 was best. } 26... Nh3+ { [%eval -3.57] } 27. Kf1 { [%eval -3.36] } 27... Qg6?! { [%eval -2.61] } { Inaccuracy. Qh5 was best. } 28. Be2?! { [%eval -3.71] } { Inaccuracy. Nh4 was best. } 28... Ng5? { [%eval -1.8] } { Mistake. Qh5 was best. } 29. Bxg5?! { [%eval -2.7] } { Inaccuracy. Nf4 was best. } { White's position is tough but the Bishop pair is one of their assets } 29... hxg5 { [%eval -2.5] } 30. Qd2 { [%eval -2.98] } 30... Kf7?! { [%eval -2.1] } { Inaccuracy. f4 was best. } { Black begins a plan to make use of the half open h-file and white seems curiously unable to oppose it. } 31. Rb1? { [%eval -4.11] } { Mistake. f4 was best. } 31... Rh8 { [%eval -4.26] } 32. Kg1 { [%eval -4.01] } 32... Rh3 { [%eval -3.31] } 33. Ne1 { [%eval -4.04] } 33... Rah8 $19 { [%eval -3.94] } 0-1


[Event "WWoE Jamboree 2025: Joe Forty -- NN"]
[Site "https://lichess.org/study/khPVCJwn/gPdNkIW9"]
[Result "1/2-1/2"]
[Variant "Standard"]
[ECO "B01"]
[Opening "Scandinavian Defense: Panov Transfer"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Joe Forty -- NN"]
[UTCDate "2025.01.15"]
[UTCTime "16:20:28"]

{ You developed sensibly and centrally, so that when you lost a pawn, it didn't seem to matter too much. However, you then had a rush of blood to the head and moved your king into a danger area, and so lost the exchange. But your Bishop came to the rescue, recovering the exchange and leading to a well-earned draw. }
1. e4 { [%eval 0.18] } 1... d5 { [%eval 0.54] } 2. exd5 { [%eval 0.51] } 2... Nf6 { [%eval 0.59] } 3. c4 { [%eval 0.14] } 3... c6 { [%eval 0.18] } 4. Nc3 { [%eval 0.14] } (4. dxc6 { Is a gambit prawn which I'm sure black would be happy for you to take }) 4... cxd5 { [%eval 0.09] } 5. cxd5 { [%eval 0.0] } (5. d4!? { Transposes into the panov botvinnik variation of the Caro Kann. it's a variation I recommend because it often leads to familiar IQ P positions }) 5... Nxd5 $10 { [%eval 0.0] } 6. Nxd5 $14 { [%eval -0.47] } { I don't know if you've ever heard the phrase, to take is a mistake? The idea is that, by taking, you often improve the position of one of the defending pieces: in this case, the queen. We always say,, don't get your queen out too early, and that's good advice because the queen is often bugged by the opponent's minor pieces which game time for development by attacking the queen, but in this position the queen has a fine dominating position in the centre and can't easily be attacked. } (6. Bc4!? { You can try and make use of the fact that you haven't yet played D4 by playing this developing move. there are a couple of nice ideas for example } 6... Nxc3 7. Qf3! $14 (7. Qb3!?)) (6. d4 { Is the Panov again }) 6... Qxd5 { [%eval -0.52] } 7. Nf3 { [%eval -0.42] } 7... Bg4?! { [%eval -0.15] } 8. Be2 $15 { [%eval -0.43] } (8. Qa4+! Bd7 9. Qf4 $10) 8... Nc6 { [%eval -0.42] } 9. O-O { [%eval -0.45] } 9... e6 { [%eval -0.42] } 10. d4 { [%eval -0.51] } 10... Bd6 { [%eval -0.28] } 11. Be3 { [%eval -0.29] } 11... O-O $15 { [%eval -0.32] } { Black stands a little better here. White's pieces are passive and have little chance of making use of the attacking possibilities of an isolated Queens pawn. } 12. a3 { [%eval -0.43] } 12... Qh5?! { [%eval 0.34] } { Inaccuracy. Rad8 was best. } { Ganging up on F3 but also attacking H2. It actually seems a bit too early for black to start attacking -- they should complete development instead. } 13. Re1? $17 { [%eval -0.76] } { Mistake. h3 was best. } (13. h3! $14 { Solves both problems }) 13... Bxf3 { [%eval -0.88] } 14. Bxf3 { [%eval -1.09] } 14... Qxh2+ { [%eval -0.98] } { I don't think you're going to get checkmated here, but you are a whole pawn down } 15. Kf1 { [%eval -1.09] } 15... Bc7 { [%eval -0.58] } 16. Qc2?! $17 { [%eval -1.37] } { Inaccuracy. Rc1 was best. } 16... Qd6? $10 { [%eval 0.0] } { Mistake. Rac8 was best. } { Again black should stop fidgeting with the queen and complete their development } 17. Rad1 { [%eval 0.0] } 17... Rac8?! $14 { [%eval 1.01] } { Inaccuracy. Ne7 was best. } { Despite the missing pawn, white stands slightly better here the Bishop pair is worth something and white has completed development. However you now make a big misjudgment } 18. Ke2?? $19 { [%eval -2.65] } { Blunder. d5 was best. } { That King was OK where it was, but here it's a magnet for Black tactics. } (18. d5! $16 { Gets rid of your isolated Queens prawn and opens up the game for your Bishop repair }) 18... Ba5! { [%eval -2.46] } { TACTIC: discovery
setting up the discovery Nxd4+ } 19. Qe4?! { [%eval -3.41] } { Inaccuracy. Qc5 was best. } 19... Bxe1 { [%eval -3.53] } 20. Rxe1 { [%eval -4.08] } { White has the Bishop pair but facing Rook and Pawn is a big ask. } 20... f5 { [%eval -3.97] } 21. Qh4 { [%eval -4.49] } 21... e5 { [%eval -4.12] } 22. Rh1 { [%eval -4.65] } 22... h6 { [%eval -4.48] } 23. d5 { [%eval -4.9] } 23... Nd4+ $10 { [%eval -5.0] } { Black offers to return the pawn; it shouldn't make it much harder to win the game, but it might give White unnecessary hope. } 24. Bxd4 { [%eval -4.91] } 24... exd4 { [%eval -4.41] } 25. Qxd4 $19 { [%eval -4.54] } { If White can activate the Rook, they will stand well, but Black can prevent this. } 25... Qc7? { [%eval -2.3] } { Mistake. Rc2+ was best. } (25... Rfe8+! 26. Kd3 Qc7 27. Qa4 Qc5 $19 { Is crushing }) 26. d6?! { [%eval -3.6] } { Inaccuracy. Rd1 was best. } (26. Rd1 Rfe8+ 27. Kf1 { and White is clearly worse, but Black has a much harder job. }) 26... Rfe8+ { [%eval -3.6] } 27. Kf1 { [%eval -3.41] } 27... Qc1+ { [%eval -3.45] } 28. Bd1 { [%eval -3.3] } { And Black comes up with a huge bucket of hope for White: } 28... Qc4+?? { [%eval 0.29] } { Blunder. Qc5 was best. } 29. Qxc4+ { [%eval 0.28] } 29... Rxc4 { [%eval 0.21] } 30. Bb3 $10 { [%eval 0.25] } { TACTIC: pin
with equality. } 30... b5 { [%eval 0.34] } 31. f3 { [%eval 0.0] } 31... Rd8 { [%eval 0.01] } 32. Ke2 { [%eval -0.16] } 32... Rxd6 { [%eval -0.21] } 33. Bxc4+ { [%eval -0.19] } 33... bxc4 { [%eval -0.15] } 34. Rc1 { [%eval -0.24] } 34... Rd4 { [%eval -0.03] } 35. Ke3 { [%eval -0.02] } 35... Rh4 { [%eval 0.0] } 36. f4 { [%eval 0.0] } 36... Rg4 { [%eval 0.0] } 37. Kf3 $10 { [%eval 0.0] } { Well done! } 1/2-1/2


[Event "WWoE Jamboree 2025: Ethan Chung -- Joe Forty"]
[Site "https://lichess.org/study/khPVCJwn/2DTcNWJZ"]
[Result "1/2-1/2"]
[Variant "Standard"]
[ECO "C50"]
[Opening "Italian Game: Giuoco Pianissimo, Italian Four Knights Variation"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Ethan Chung -- Joe Forty"]
[UTCDate "2025.01.15"]
[UTCTime "16:28:33"]

{ Steady stuff! Although I think you had whatever slim chances were around to win, it needs a bit more accuracy and energy than you found. }
1. e4 { [%eval 0.18] } 1... e5 { [%eval 0.21] } 2. Nf3 { [%eval 0.13] } 2... Nc6 { [%eval 0.17] } 3. Bc4 { [%eval 0.12] } 3... Nf6 { [%eval 0.14] } 4. d3 { [%eval 0.09] } 4... Bc5 { [%eval 0.1] } 5. Nc3 { [%eval 0.08] } { Surprised to see Old Stodge at U18 level. You can tell me that it's sometimes played even at super-GM level, and you'd be right, but it's terribly dry stuff. } { Carlsen, M. - Vidit, S., 1/2-1/2, 84th Tata Steel Masters, 2022, https://lichess.org/WTZkGbx5 } 5... h6 { [%eval 0.1] } (5... a6 6. Nd5 Nxd5 7. Bxd5 d6 8. Be3 Bxe3 9. fxe3 O-O 10. O-O Nb8 11. b4 Nd7 12. Qd2 c6 13. Bb3 a5 14. a3 Nf6 15. h3 h6 16. Rab1 b5 17. Qc3 Bd7 18. Rf2 Qb6 19. Re1 $15 Rfe8 20. Nh4 c5 21. Ref1 cxb4 22. Qe1 d5 23. axb4 dxe4 24. bxa5 Rxa5 25. Ng6 Be6 26. Nxe5 exd3 27. Rxf6 gxf6 28. Rxf6 d2 29. Qg3+ Kf8 30. Rf1 Ra7 31. Ng6+ Kg7 32. Nf4+ Kh8 33. Nh5 f6 34. Nxf6 Rf8 35. Qf4 Rh7 36. Qe5 { it's still dead equal as long as Black finds ...Rg7 } 36... Qc7?? 37. Ne8+ { Kramnik, V. - Aronian, L., 1-0, FIDE Candidates 2018, https://lichess.org/PXUrAy86 }) (5... d6 { is the main line, when the only way to get any play is to try and mobilise the centre pawns. } 6. Bg5 h6 7. Bxf6 Qxf6 8. Nd5 Qd8 9. c3 Ne7 10. Ne3 Bxe3 11. fxe3 O-O 12. O-O c6 { has been the main line of theory for over a century. }) 6. Be3 { [%eval 0.03] } 6... Bb6 { [%eval 0.13] } { That's a good principled move; White doesn't get a half-open f-file, and White might give you the half-open a-file. } (6... Bxe3 7. fxe3 { and White can dream about an attack down the f-file (see the Kramnik game). }) 7. Qd2 { [%eval 0.0] } 7... Qe7 { [%eval 0.34] } 8. Nd5 { [%eval 0.17] } 8... Nxd5 { [%eval 0.16] } 9. Bxd5 { [%eval 0.21] } 9... d6 { [%eval 0.19] } 10. c3 { [%eval 0.05] } 10... Bg4 { [%eval 0.15] } 11. Bxb6 { [%eval -0.24] } 11... axb6 { [%eval -0.25] } 12. Qe3 { [%eval -0.24] } 12... Be6 $10 { [%eval 0.0] } 13. Bxc6+ { [%eval -0.3] } 13... bxc6 { [%eval -0.3] } { With all the exchanges, black's pawn formation has become a little messier, but in fact as the pawns have moved towards the centre, black can claim a small advantage -- particularly having a Bishop facing a Knight. } 14. c4 { [%eval -0.51] } 14... O-O { [%eval -0.56] } 15. O-O { [%eval -0.55] } 15... f6 { [%eval -0.28] } 16. Rfc1 { [%eval -0.36] } 16... d5 { [%eval -0.12] } 17. Nh4 { [%eval -0.57] } 17... Qf7 { [%eval -0.33] } 18. b3 $17 { [%eval -0.82] } { Black is a little better here: better minor piece, better centre, a few more options. } 18... d4?! $15 { [%eval -0.38] } { Closing the position helps only White. } (18... Qh5!) 19. Qg3 { [%eval -0.3] } 19... Rfe8 { [%eval -0.26] } 20. Rf1 { [%eval -0.2] } 20... g5 { [%eval -0.16] } 21. Nf3 { [%eval -0.64] } 21... Bd7 $15 { [%eval -0.26] } (21... Ra3! $17 { and you can pin down White to the defence of the a-pawn. I have a vague idea this was the idea in one of the puzzles at the training day... (Hug-Barle 1975 https://www.chessgames.com/perl/chessgame?gid=1998323). }) 22. h4?! { [%eval -0.7] } 22... Qe7 { [%eval -0.36] } (22... Ra3! { is still best }) 23. Nh2 { [%eval -0.47] } 23... h5 $10 { [%eval 0.05] } 24. f4 { [%eval 0.21] } 24... g4 { [%eval 0.34] } 25. f5?! { [%eval -0.26] } { Inaccuracy. fxe5 was best. } 25... Qb4 { [%eval -0.17] } 26. Qe1 { [%eval -0.24] } 26... Qxe1 { [%eval 0.0] } 27. Rfxe1 { [%eval 0.0] } 27... Ra3! $10 { [%eval 0.0] } { Hurrah! But with everything else stuck in concrete, it doesn't matter any more. } 28. Reb1 { [%eval 0.0] } 28... b5 { [%eval 0.0] } 29. Kf2 { [%eval 0.0] } 29... Rea8 { [%eval 0.0] } 30. Rb2 { [%eval 0.0] } 30... c5 { [%eval 0.0] } 31. Ke2?! { [%eval -0.83] } { Inaccuracy. Nf1 was best. } 31... b4?! { [%eval 0.15] } { Inaccuracy. bxc4 was best. } { The more you close off options, the fewer winning chances you have. } (31... bxc4! 32. bxc4 Rc3! $15) 32. Nf1 { [%eval 0.14] } 32... Kg7 { [%eval 0.16] } 33. Kd2 { [%eval 0.17] } 33... Be8 $10 { [%eval 0.11] } 1/2-1/2


[Event "WWoE Jamboree 2025: Ayush Menon -- Joe Forty"]
[Site "https://lichess.org/study/khPVCJwn/Yr7o237A"]
[Result "0-1"]
[Variant "Standard"]
[ECO "C58"]
[Opening "Italian Game: Two Knights Defense, Polerio Defense, Kieseritzky Variation"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Ayush Menon -- Joe Forty"]
[UTCDate "2025.01.15"]
[UTCTime "16:39:48"]

{ Once the game left the path of theory both players stumbled badly, but it was White's error in playing an unsound piece sacrifice that proved decisive. }
1. e4 { [%eval 0.18] } 1... e5 { [%eval 0.21] } 2. Nf3 { [%eval 0.13] } 2... Nc6 { [%eval 0.17] } 3. Bc4 { [%eval 0.12] } 3... Nf6 { [%eval 0.14] } 4. Ng5 { [%eval 0.1] } 4... d5 { [%eval 0.0] } 5. exd5 { [%eval 0.0] } 5... Na5 $10 { [%eval 0.0] } { The master move } (5... b5!? $14 { is less well known and a bit easier to understand, I think. }) (5... Nxd5?? $16 { is a well-known mistake, allowing the Fried Liver Attack } 6. Nxf7 Kxf7 7. Qf3+ Ke6 $16) 6. d3 { [%eval -0.28] } { Unusual, and not especially good, but it produces an immediate blunder. } (6. Bb5+ c6 7. dxc6 bxc6 { is usual, when the main lines are } 8. Be2 (8. Bd3) (8. Qf3)) 6... Nxd5?? $18 { [%eval 1.46] } { Blunder. h6 was best. } { This isn't the Fried Liver position, and you can take on c4, so perhaps it's OK? } 7. Nxf7?? $19 { [%eval -1.64] } { Blunder. Qf3 was best. } { White knows all about the Fried Liver Attack, and means to show that it works here too! But it really doesn't...
Instead, white has a straightforward attacking idea that gives black a lot of trouble,. } (7. Qf3! $18 { doesn't quite win on the spot, but Black has all sorts of problems } 7... Be6 8. Nxe6 fxe6 9. Qh5+ Kd7 10. Bd2 Nxc4 11. dxc4 Nb6 $18) 7... Kxf7 { [%eval -1.59] } 8. Qf3+ { [%eval -2.2] } 8... Ke6 { [%eval -2.22] } 9. Nc3?! { [%eval -3.36] } { Inaccuracy. Bg5 was best. } 9... Nxc4 { [%eval -3.51] } 10. Nxd5?! { [%eval -4.98] } { Inaccuracy. Bg5 was best. } { More or less forces the exchange of Queens, which is really not what White wants. } 10... Qxd5 { [%eval -4.79] } 11. Qxd5+ { [%eval -4.81] } 11... Kxd5 { [%eval -4.85] } 12. dxc4+ { [%eval -4.79] } 12... Kxc4 $19 { [%eval -4.83] } { Black is a whole piece ahead with no problems, and I would have forgiven White for resigning here. I struggled to find anything to comment on in the rest of the game except to say you kept control throughout. } 13. O-O { [%eval -4.9] } 13... Bf5 { [%eval -4.85] } 14. Be3 { [%eval -4.98] } 14... Bc5 { [%eval -4.55] } 15. b3+ { [%eval -4.56] } 15... Kb5 { [%eval -4.58] } 16. a4+ { [%eval -4.38] } 16... Kc6 { [%eval -4.62] } 17. Bxc5 { [%eval -4.6] } 17... Kxc5 { [%eval -4.51] } 18. Rab1 { [%eval -4.95] } 18... Rad8 { [%eval -4.98] } 19. b4+ { [%eval -5.16] } 19... Kc4 { [%eval -5.19] } 20. f4 { [%eval -5.33] } 20... Bxc2 { [%eval -5.45] } 21. Rbc1 { [%eval -5.28] } 21... Rd2 { [%eval -5.17] } 22. fxe5 { [%eval -5.16] } 22... Kxb4 { [%eval -5.06] } 23. Rf7 { [%eval -5.17] } 23... Bxa4 { [%eval -4.35] } 24. Rfxc7 { [%eval -5.46] } 24... Bc6 { [%eval -5.42] } 25. Rxg7 { [%eval -5.38] } 25... Re2 { [%eval -4.73] } 26. Rg4+ { [%eval -5.35] } 26... Ka5 { [%eval -5.28] } 27. Rg5 { [%eval -5.5] } 27... Re8 { [%eval -5.39] } 28. Ra1+ { [%eval -5.77] } 28... Kb6 { [%eval -5.73] } 29. Rb1+ { [%eval -5.57] } 29... Kc7 { [%eval -5.79] } 30. Rg7+ { [%eval -5.76] } 30... Kb8 { [%eval -5.65] } 31. Rxh7 { [%eval -7.29] } 31... Rxg2+ { [%eval -7.44] } 32. Kf1 { [%eval -7.42] } 32... Rf8+ { [%eval -7.37] } 33. Ke1 { [%eval -7.17] } 33... Rg1+ $19 { [%eval -7.13] } 0-1


[Event "WWoE Jamboree 2025: NN - Ronit Randawa"]
[Site "https://lichess.org/study/khPVCJwn/aEhbnVz1"]
[Result "0-1"]
[Variant "Standard"]
[ECO "D02"]
[Opening "Queen's Pawn Game: London System"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "NN - Ronit Randawa"]
[UTCDate "2025.01.15"]
[UTCTime "16:47:20"]

{ On move 10, White's hand called their brain, but got no reply. You converted very nicely, never losing control. }
1. d4 { [%eval 0.17] } 1... Nf6 { [%eval 0.19] } 2. Bf4 { [%eval 0.05] } 2... d5 { [%eval 0.17] } 3. Nf3 { [%eval 0.04] } 3... Bf5 { [%eval 0.12] } 4. h3 { [%eval -0.09] } 4... e6 { [%eval -0.02] } 5. e3 { [%eval -0.08] } 5... c5 { [%eval 0.0] } 6. c3 { [%eval -0.21] } 6... Nc6 { [%eval -0.23] } 7. Bd3 { [%eval -0.12] } 7... Bg6 { [%eval 0.0] } 8. Ne5 { [%eval -0.14] } 8... Nxe5 { [%eval -0.08] } 9. Bxe5 { [%eval -0.11] } 9... Qb6 $10 { [%eval -0.02] } 10. Qb3?? $19 { [%eval -5.87] } { Blunder. Bxg6 was best. } 10... Bxd3 { [%eval -5.92] } 11. Qxb6 { [%eval -5.99] } { I expect that White, being a piece down, is better off keeping the Queens on, and hoping to make trouble sometime. The rest of the game gives Black no problems at all. } 11... axb6 { [%eval -5.82] } 12. Na3 { [%eval -5.9] } 12... cxd4 { [%eval -5.73] } 13. Bxd4 { [%eval -6.04] } 13... Bxa3 { [%eval -6.03] } 14. bxa3 { [%eval -6.08] } 14... Rxa3 { [%eval -5.38] } 15. Kd2 { [%eval -5.63] } 15... Bg6 { [%eval -5.68] } 16. f3 { [%eval -5.5] } 16... b5 { [%eval -5.31] } 17. g4 { [%eval -5.46] } 17... O-O { [%eval -5.03] } 18. Bc5 { [%eval -4.98] } 18... Rfa8 { [%eval -5.02] } 19. Bxa3 { [%eval -4.93] } 19... Rxa3 { [%eval -4.91] } 20. h4 { [%eval -5.05] } 20... h6 { [%eval -4.85] } 21. h5 { [%eval -4.84] } 21... Bh7 { [%eval -4.85] } 22. Rhg1 { [%eval -4.91] } 22... Nd7 { [%eval -4.77] } 23. f4 { [%eval -5.71] } 23... Be4 { [%eval -5.38] } 24. g5 { [%eval -5.69] } 24... hxg5 { [%eval -5.56] } 25. fxg5 { [%eval -5.82] } 25... Ne5 { [%eval -5.84] } 26. Rg3 { [%eval -6.23] } 26... Nc4+ { [%eval -6.04] } 27. Kd1 { [%eval -6.33] } 27... Rxc3 { [%eval -6.19] } 28. h6 { [%eval -6.68] } 28... Rxe3 { [%eval -6.7] } 29. Rxe3 { [%eval -6.58] } 29... Nxe3+ { [%eval -6.29] } 30. Kd2 { [%eval -6.19] } 30... Nc4+ { [%eval -6.53] } 31. Kc3 { [%eval -6.29] } 31... gxh6 { [%eval -6.35] } 32. Rg1 { [%eval -6.46] } 32... hxg5 { [%eval -6.42] } 33. Rxg5+ { [%eval -6.33] } 33... Kf8 { [%eval -6.31] } 34. Kb4 { [%eval -6.55] } 34... Ne3 { [%eval -6.54] } { "Nc5" } 35. Kc5 { [%eval -6.48] } 35... Ke7 { [%eval -6.62] } 36. Rg8 { [%eval -6.49] } 36... Bd3 { [%eval -5.75] } 37. Rg3 { [%eval -6.62] } 37... Bc4?! $19 { [%eval -4.32] } { Inaccuracy. d4 was best. } { Black is still winning rather easily. } (37... d4! { holds onto the piece, because } 38. Kxd4 Nf5+) 0-1


[Event "WWoE Jamboree 2025: Ronit Randawa - Linish Chandra"]
[Site "https://lichess.org/study/khPVCJwn/NGzA98k1"]
[Result "1-0"]
[Variant "Standard"]
[ECO "B11"]
[Opening "Caro-Kann Defense: Two Knights Attack, Mindeno Variation"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Ronit Randawa - Linish Chandra"]
[UTCDate "2025.01.15"]
[UTCTime "16:57:38"]

{ A very nice game where you were winning for most of time and converted nicely although there was one little wobble towards the end that could have cost you the win. }
1. e4 { [%eval 0.18] } 1... c6 { [%eval 0.23] } 2. Nc3 { [%eval 0.21] } 2... d5 { [%eval 0.32] } 3. Nf3 { [%eval 0.16] } { The two knights variation, beloved of the young Bobby Fisher. } 3... Bg4 { [%eval 0.27] } 4. Be2 { [%eval 0.22] } (4. h3 { Is the main line which goes } 4... Bxf3 5. Qxf3 e6 { And now white has to decide how aggressive they are feeling } 6. d3 (6. d4!?) 6... Nd7 7. Bd2 Ngf6 8. g3 (8. g4!?)) 4... e6 { [%eval 0.23] } 5. O-O { [%eval 0.13] } 5... Ne7 { [%eval 0.52] } 6. d4 { [%eval 0.49] } 6... Ng6 { [%eval 0.44] } 7. h3 { [%eval 0.46] } 7... Bxf3 { [%eval 0.52] } 8. Bxf3 { [%eval 0.67] } 8... Be7 $16 { [%eval 0.7] } 9. b3 $14 { [%eval 0.32] } 9... Nd7 { [%eval 0.34] } 10. Bb2 { [%eval 0.36] } 10... O-O $14 { [%eval 0.35] } { With black's pawns blockading on the light squares, white's Bishop pair have yet to show their teeth. I think it's still white for preference. } 11. Re1?! { [%eval -0.24] } { Inaccuracy. g3 was best. } (11. g3 Rc8) 11... Nf4?! { [%eval 0.37] } { Inaccuracy. Bb4 was best. } (11... Bb4 12. a3) 12. Ne2 { [%eval 0.43] } 12... Nxe2+ { [%eval 0.51] } 13. Rxe2 { [%eval 0.37] } 13... dxe4 { [%eval 0.32] } 14. Bxe4 { [%eval 0.33] } 14... Nf6 { [%eval 0.36] } 15. Bf3 { [%eval 0.31] } 15... Nd5 { [%eval 0.54] } 16. c4 { [%eval 0.57] } 16... Nc7 { [%eval 0.73] } 17. Qd3 { [%eval 0.46] } 17... Bf6 { [%eval 0.43] } 18. Rd1 { [%eval 0.47] } 18... Rb8 { [%eval 0.86] } 19. Bc3 { [%eval 0.61] } 19... Qd6 { [%eval 0.67] } 20. Red2 $16 { [%eval 0.68] } { What has a fine position here and black can only wait for you to reveal your plan } 20... c5? $18 { [%eval 2.3] } { Mistake. Rfd8 was best. } { Or they can lash out when the open lines will favour your active pieces... } (20... Rfd8 21. g3) 21. dxc5!? $18 { [%eval 2.29] } { You handle the next phase very well } (21. Qe3!? { Might be even better }) 21... Qxd3 { [%eval 2.72] } 22. Rxd3 { [%eval 2.77] } 22... Bxc3 { [%eval 2.35] } 23. Rxc3 { [%eval 2.29] } 23... Na6?! { [%eval 3.03] } { Inaccuracy. a5 was best. } (23... a5) 24. c6! { [%eval 3.11] } 24... bxc6 { [%eval 2.99] } 25. Rd7 { [%eval 2.93] } 25... Nb4? $18 { [%eval 4.81] } { Mistake. Nc5 was best. } { white has a winning position } 26. Rxa7?? $16 { [%eval 1.26] } { Blunder. a3 was best. } { Two question marks from Stockfish is harsh, but a3 is definitely better. } (26. a3 Na6 27. Rxa7 Ra8 28. Rxa8 Rxa8 29. Bxc6 Rb8 30. b4 $18 { with three connected passed pawns, and a crushing position }) 26... Ra8 { [%eval 1.16] } 27. Rxa8 { [%eval 1.19] } 27... Rxa8 { [%eval 1.14] } 28. a4 { [%eval 1.19] } { Only one passed pawn now and it's not easy to push. } 28... g6 { [%eval 1.13] } 29. Rc1 { [%eval 1.31] } 29... Ra6?! { [%eval 2.17] } { Inaccuracy. Kf8 was best. } 30. Rd1 { [%eval 2.09] } 30... c5 { [%eval 2.3] } 31. Rd8+ { [%eval 2.0] } 31... Kg7 { [%eval 1.91] } 32. Rc8 { [%eval 1.91] } 32... Ra5?! { [%eval 3.08] } { Inaccuracy. Nd3 was best. } 33. Ra8? { [%eval 1.68] } { Mistake. Rb8 was best. } (33. Rb8 { idea Rb5 is best }) 33... Rxa8 { [%eval 1.55] } 34. Bxa8 { [%eval 1.26] } 34... Kf8 $16 { [%eval 1.28] } { You're still winning here, but your Bishop won't find it easy to support the advance of your pawns. } 35. Kf1 { [%eval 1.31] } 35... Ke7 { [%eval 1.1] } 36. Ke2 { [%eval 1.14] } 36... Kd6 { [%eval 1.32] } 37. f4 { [%eval 1.39] } 37... Nc2 $16 { [%eval 1.56] } { Still better for you, but } 38. Kd2? { [%eval 0.06] } { Mistake. Kd3 was best. } (38. Kd3) 38... Nb4?? { [%eval 2.12] } { Blunder. Nd4 was best. } { and from here you reeled in the fish. } (38... Nd4! $10 39. Kc3 Ne2+ { TACTIC: fork }) 1-0


[Event "WWoE Jamboree 2025: Vismith Prabha -- Ronit Randhawa"]
[Site "https://lichess.org/study/khPVCJwn/vqVFyaJd"]
[Result "1/2-1/2"]
[Variant "Standard"]
[ECO "E25"]
[Opening "Nimzo-Indian Defense: Sämisch Variation"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Vismith Prabha -- Ronit Randhawa"]
[UTCDate "2025.01.15"]
[UTCTime "21:10:04"]

{ White stood very well coming out of the opening, but you defended well and deserved your draw. }
1. d4 { [%eval 0.17] } 1... Nf6 { [%eval 0.19] } 2. c4 { [%eval 0.18] } 2... e6 { [%eval 0.11] } 3. Nc3 { [%eval 0.17] } 3... Bb4 { [%eval 0.09] } 4. f3 { [%eval 0.08] } { A recently trendy line, although once the computers picked over it, it's clearly worth only equality against best play.
https://www.youtube.com/playlist?list=PLXTBx6HrYm16kXIG3vNEcGWFDs9HdCMg9 } 4... d5 { [%eval 0.01] } (4... c5 { scores fractionally better in master play }) 5. a3 { [%eval 0.08] } 5... Bxc3+ { [%eval 0.07] } 6. bxc3 { [%eval 0.03] } 6... c5 { [%eval 0.12] } 7. cxd5 $10 { [%eval 0.1] } 7... cxd4?! $16 { [%eval 1.13] } { Inaccuracy. exd5 was best. } (7... Nxd5 { is most commonly played, when } 8. dxc5 Qa5 9. e4 { is the best try for an advantage. White's extra pawn is pretty meaningless, but the Bishop pair counts for something. }) 8. cxd4?! $14 { [%eval 0.45] } { Inaccuracy. dxe6 was best. } (8. dxe6! Bxe6 9. cxd4 { and White is a pawn up with all the other advantages of position, except development. }) 8... Nxd5 { [%eval 0.67] } (8... exd5! { looks better here, holding up e4. }) 9. e4 { [%eval 0.77] } 9... Nf6?! $16 { [%eval 1.39] } { Inaccuracy. Nb6 was best. } (9... Nb6 { and the Knight has more options }) 10. Ne2 { [%eval 0.87] } (10. Bd3!? { first is best }) 10... O-O { [%eval 0.92] } 11. Bg5 { [%eval 0.69] } 11... Nc6 { [%eval 0.7] } 12. g4 { [%eval 0.67] } 12... Qa5+ { [%eval 0.71] } 13. Bd2 { [%eval 0.73] } 13... Qd8 { [%eval 0.62] } 14. Be3 { [%eval 0.78] } 14... b6 $16 { [%eval 0.87] } 15. Qd2?! $10 { [%eval 0.0] } { Inaccuracy. Rc1 was best. } 15... Bb7?! $14 { [%eval 0.72] } { Inaccuracy. Na5 was best. } (15... Na5! { is a cheap shot but helps you organise your pieces }) 16. h4 { [%eval 0.33] } 16... Qe7?! $16 { [%eval 1.02] } { Inaccuracy. Na5 was best. } 17. Kf2 { [%eval 0.63] } 17... Rfd8 { [%eval 0.6] } 18. Qb2 { [%eval 0.53] } 18... Rac8 { [%eval 0.59] } 19. Rc1 { [%eval 0.48] } 19... Na5 { [%eval 0.71] } 20. Ng3 $14 { [%eval 0.71] } { White has been signalling their intention to attack on the King's-side for a while, but has yet to make anything stick. Meanwhile, you can make a little distraction on the other wing. } 20... Rxc1 { [%eval 0.72] } 21. Qxc1?! { [%eval 0.31] } 21... Rc8 { [%eval 0.2] } 22. Qb2 { [%eval 0.36] } 22... Nc4 { [%eval 0.29] } 23. Bxc4 { [%eval 0.34] } 23... Rxc4 { [%eval 0.31] } 24. Rc1 { [%eval 0.35] } 24... Rxc1 { [%eval 0.33] } (24... Qc7 { is better: make White make the swap. }) 25. Qxc1 { [%eval 0.33] } 25... Qd7 { [%eval 0.33] } 26. Qc3 { [%eval 0.13] } 26... Qc6 $14 { [%eval 0.36] } { It's taken you some extra moves to challenge the Queen. but a lot of the energy has gone out of the White position, and you're close to equality. } 27. Qd2 { [%eval 0.13] } 27... Qa4 { [%eval 0.25] } 28. Qc3 { [%eval 0.15] } 28... Qc6 { [%eval 0.3] } 29. Qb4 { [%eval 0.1] } 29... Ne8 $14 { [%eval 0.28] } 1/2-1/2


[Event "WWoE Jamboree 2025: Dev Mistry -- Josh Keay"]
[Site "https://lichess.org/study/khPVCJwn/buMA8XoS"]
[Result "1/2-1/2"]
[Variant "Standard"]
[ECO "B08"]
[Opening "Pirc Defense: Classical Variation"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Dev Mistry -- Josh Keay"]
[UTCDate "2025.01.15"]
[UTCTime "21:18:20"]

{ A game that was roughly level throughout and both sides played quite OK, but there was a little tactic cutting off the retreat of the Rook which might have given you a win. }
1. e4 { [%eval 0.18] } 1... d6 { [%eval 0.43] } 2. d4 { [%eval 0.43] } 2... Nf6 { [%eval 0.43] } 3. Nc3 { [%eval 0.38] } 3... g6 { [%eval 0.63] } 4. Nf3 { [%eval 0.43] } (4. Bg5 { is a move, with perhaps f4 to follow }) 4... Bg7 { [%eval 0.44] } 5. Bg5 { [%eval 0.35] } { Mixing systems } 5... O-O { [%eval 0.34] } 6. Qd2 { [%eval 0.28] } 6... Bg4 { [%eval 0.37] } 7. Be2 { [%eval 0.31] } 7... c5?! $14 { [%eval 0.63] } (7... Nbd7 { first is best, or }) (7... c6 { with Qc7 and/or b5 }) 8. O-O-O?! $15 { [%eval -0.29] } { Inaccuracy. dxc5 was best. } (8. dxc5 dxc5 9. Qxd8 Rxd8 10. e5 Nfd7 11. h3 $16 { and White has a plus, despite the lost tempo }) 8... cxd4 { [%eval 0.11] } 9. Nxd4 { [%eval 0.16] } 9... Bxe2 { [%eval 0.2] } 10. Ndxe2 $10 { [%eval -0.07] } { about equal } 10... Qb6?! { [%eval 0.49] } { Inaccuracy. Nbd7 was best. } 11. f3 { [%eval 0.35] } 11... Nc6 { [%eval 0.31] } 12. Bh6 { [%eval 0.25] } 12... Na5?! { [%eval 0.96] } { Inaccuracy. Ne5 was best. } (12... Ne5 13. b3 { and the Knight on e5 isn't badly off }) 13. Bxg7?! $10 { [%eval 0.16] } { Inaccuracy. b3 was best. } (13. b3! $16 { and your Knight has nowhere to go except back to c6 }) 13... Kxg7?! $16 { [%eval 0.85] } { Inaccuracy. Nc4 was best. } { The last Bishops disappear, so both sides must work out how best to deploy their short-stepping knights. } 14. Na4?! $10 { [%eval -0.13] } { Inaccuracy. b3 was best. } { A pointless 'poke', easily dealt with, and after which the Knight is misplaced. } 14... Qb5?! { [%eval 0.56] } { Inaccuracy. Qa6 was best. } 15. b3 { [%eval 0.43] } 15... Nc6 { [%eval 0.55] } 16. Nec3 { [%eval 0.18] } 16... Qh5?! { [%eval 0.96] } { Inaccuracy. Qa5 was best. } 17. Qf2? { [%eval -0.31] } { Mistake. Nd5 was best. } 17... Rfd8 $10 { [%eval 0.05] } 18. Qg3? $17 { [%eval -1.09] } { Mistake. Qd2 was best. } 18... Qh6+? { [%eval 0.3] } { Mistake. Qa5 was best. } 19. Kb2 { [%eval 0.26] } 19... Nh5 { [%eval 0.67] } 20. Qh4 $14 { [%eval 0.26] } 20... Nf4?! $14 { [%eval 0.83] } { Inaccuracy. Qf4 was best. } 21. Qxh6+?! { [%eval 0.18] } { Inaccuracy. Qf2 was best. } 21... Kxh6 { [%eval 0.16] } 22. g3 { [%eval 0.13] } 22... Ne6 $10 { [%eval 0.13] } { White now advances with the Rook, but its retreat can be cut off. } 23. Rd5?? $19 { [%eval -2.28] } { Blunder. Nd5 was best. } 23... b6?? $10 { [%eval 0.07] } { Blunder. Ned4 was best. } (23... Ned4! { and if } 24. Rf1 e6! { netting the Rook }) 24. Ne2 { [%eval 0.05] } 24... Kg7 { [%eval 0.08] } 25. Nf4?? $19 { [%eval -2.27] } { Blunder. c4 was best. } 25... Nxf4?? $15 { [%eval -0.32] } { Blunder. Ned4 was best. } (25... Ned4 { wins the Pf3 as before. }) 26. gxf4 { [%eval -0.42] } 26... Nb4?! $14 { [%eval 0.23] } { Inaccuracy. e6 was best. } 27. Rb5 { [%eval -0.05] } 27... Nc6 { [%eval -0.06] } 28. f5? $17 { [%eval -1.33] } { Mistake. Nc3 was best. } 28... Rac8?! $15 { [%eval -0.33] } { Inaccuracy. Nd4 was best. } (28... Nd4 { TACTIC: fork }) 29. Rd5 { [%eval -0.34] } 29... Nb4 { [%eval -0.37] } 30. Rd2 $15 { [%eval -0.29] } { I think you pondered about playing on here; there's no harm in it, you do look a little better here, yet Stockfish puts it close to equal chances, so a draw is fair enough. But
Magnus would have a go! } 30... Kf6 31. fxg6 hxg6 32. h4 Rh8 33. Nc3 Kg7 $15 1/2-1/2


[Event "WWoE Jamboree 2025: Josh Keay -- Oliver Hammond"]
[Site "https://lichess.org/study/khPVCJwn/xWPWtigh"]
[Result "0-1"]
[Variant "Standard"]
[ECO "C01"]
[Opening "French Defense: Exchange Variation"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Josh Keay -- Oliver Hammond"]
[UTCDate "2025.01.15"]
[UTCTime "21:27:35"]

{ There were two missed opportunities for you here I fear and either of them could have given you a win in a game that gradually slipped away from you }
1. e4 { [%eval 0.18] } 1... e6 { [%eval 0.28] } 2. d4 { [%eval 0.28] } 2... d5 { [%eval 0.33] } 3. exd5 { [%eval 0.22] } 3... exd5 { [%eval 0.14] } { This is often rather prospectless for White, even if you are accurate. } 4. Nf3 { [%eval 0.09] } 4... Nf6 { [%eval 0.17] } 5. Nc3 $10 { [%eval 0.0] } { Well, not so accurate. That Knight really doesn't have much of a career on the Queen's-side. I think I told you this before!
https://lichess.org/study/RaOIpsQc/vG8RbfXE } (5. Bd3! $10) (5. c4!? $10) 5... Nc6 { [%eval 0.18] } 6. Bg5 { [%eval 0.1] } 6... Bb4 { [%eval 0.13] } 7. Bb5 { [%eval 0.09] } 7... O-O { [%eval 0.14] } 8. O-O { [%eval 0.06] } 8... Bxc3 { [%eval 0.12] } 9. bxc3 { [%eval 0.11] } 9... h6 { [%eval 0.14] } 10. Bh4 { [%eval 0.19] } 10... Bd7?! $14 { [%eval 0.77] } { Inaccuracy. Qd6 was best. } 11. Re1 { [%eval 0.6] } { The big moment of the game is about to happen: } 11... g5?? $18 { [%eval 3.3] } { Blunder. Re8 was best. } { Giving White a chance... } 12. Bg3?? $14 { [%eval 0.54] } { Blunder. Nxg5 was best. } { ...which White ignores! } (12. Nxg5 hxg5 13. Bxg5 $18 { is a standard sacrifice, which I hope you considered! But standard sacrfices don't always succeed, what about this one? Actually, it's fine. The critical line, showing some typical themes, is: } 13... Kg7 14. Qf3 Nxd4 15. cxd4 Bxb5 16. Re5 Qd6 17. Bxf6+ Qxf6 18. Qg4+ Qg6 19. Rg5 $18) 12... Ne4 { [%eval 0.51] } 13. Qd3 { [%eval 0.22] } 13... a6 { [%eval 0.6] } 14. Bxc6 { [%eval 0.56] } 14... Bxc6 $14 { [%eval 0.46] } { You're still OK here, a little better because of Black's poor Bishop, but now it starts to slip away. } 15. Be5? $15 { [%eval -0.72] } { Mistake. Ne5 was best. } 15... f6 { [%eval -0.69] } 16. Bg3 { [%eval -0.75] } 16... Bb5 { [%eval -0.79] } 17. Qe3 { [%eval -0.71] } 17... f5 { [%eval -0.45] } 18. Be5 { [%eval -0.61] } 18... f4 { [%eval -0.6] } 19. Qc1 $15 { [%eval -0.63] } 19... Nxc3?! $10 { [%eval -0.02] } { Inaccuracy. Qd7 was best. } 20. Nd2?? $19 { [%eval -1.78] } { Blunder. Qb2 was best. } { Dropping the exchange } (20. Qb2! { fights back } 20... Ne4 21. Qb3 { threatens Rxe4
TACTIC: pin } 21... Kh7? 22. c4!) 20... Ne2+ { [%eval -1.74] } { TACTIC: fork } 21. Rxe2 { [%eval -1.69] } 21... Bxe2 { [%eval -1.66] } 22. Qb2?! { [%eval -2.38] } { Inaccuracy. Qb1 was best. } 22... Bb5 { [%eval -2.04] } 23. a4 { [%eval -2.4] } 23... Bc6 { [%eval -2.43] } 24. c3 { [%eval -2.73] } 24... Qd7 { [%eval -2.58] } 25. Qc2 { [%eval -2.88] } 25... Qf5 { [%eval -2.86] } 26. Qd1 { [%eval -2.89] } 26... Rae8?! { [%eval -2.2] } { Inaccuracy. Rf7 was best. } 27. Qh5?! $19 { [%eval -3.08] } { Inaccuracy. Bxc7 was best. } 27... Kh7 { [%eval -3.11] } 28. Nf3 { [%eval -3.69] } 28... g4 { [%eval -3.64] } 29. Qxf5+ { [%eval -3.53] } 29... Rxf5 { [%eval -3.51] } 30. Nd2 { [%eval -3.99] } 30... Kg6 { [%eval -3.66] } 31. Nb3 { [%eval -3.81] } 31... b6 { [%eval -3.68] } 32. Nd2 { [%eval -4.22] } 32... Kg5 { [%eval -3.52] } 33. f3 { [%eval -3.7] } 33... h5 { [%eval -3.71] } 34. Kf2 { [%eval -3.9] } 34... Bb7?! { [%eval -2.7] } { Inaccuracy. Rfxe5 was best. } 35. Re1?! $19 { [%eval -3.6] } { Inaccuracy. a5 was best. } { Black is an Exchange and a pawn ahead, with a not-so-great Bishop, but with all the winning chances. Yet, if I have the position right, there was another opportunity missed: } 35... c5?? $10 { [%eval 0.0] } { Blunder. Bc6 was best. } { The last recorded move...
0-1 } 36. Bxf4+! { [%eval 0.0] } 36... Rxf4 { [%eval 0.0] } 37. Rxe8 { [%eval 0.0] } 37... cxd4 38. g3 Rf6 39. f4+ Kg6 40. cxd4 $10 0-1


[Event "WWoE Jamboree 2025: Jonmi Saha -- Josh Keay"]
[Site "https://lichess.org/study/khPVCJwn/pjSSSslO"]
[Result "1-0"]
[Variant "Standard"]
[ECO "A46"]
[Opening "Indian Defense: Wade-Tartakower Defense"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Jonmi Saha -- Josh Keay"]
[UTCDate "2025.01.15"]
[UTCTime "21:39:10"]

{ White's advantage grew all game, but there was a blink-and-you-miss-it chance for you to draw the Rook endgame. }
1. d4 { [%eval 0.17] } 1... Nf6 { [%eval 0.19] } 2. Nf3 { [%eval 0.11] } 2... d6 { [%eval 0.43] } 3. Bg5 { [%eval 0.15] } 3... h6 { [%eval 0.19] } 4. Bh4 { [%eval 0.01] } 4... Bg4 { [%eval 0.41] } 5. e3 { [%eval 0.09] } 5... Nc6 { [%eval 0.61] } 6. Be2 { [%eval 0.3] } 6... e5 { [%eval 0.29] } 7. O-O { [%eval 0.35] } 7... exd4 { [%eval 0.19] } 8. Nxd4 { [%eval 0.18] } 8... Bxe2 { [%eval 0.22] } 9. Qxe2 $10 { [%eval 0.2] } 9... Qd7?? $18 { [%eval 2.03] } { Blunder. g5 was best. } (9... g5 { escapes the pin without your pawns being messed up. }) 10. Qb5?? $15 { [%eval -0.85] } { Blunder. Bxf6 was best. } 10... Rb8?? $18 { [%eval 1.81] } { Blunder. Nxd4 was best. } 11. Nxc6? $14 { [%eval 0.39] } { Mistake. Bxf6 was best. } 11... Qxc6 { [%eval 0.34] } 12. Qxc6+ { [%eval 0.29] } 12... bxc6 { [%eval 0.31] } 13. Bxf6 { [%eval 0.27] } 13... gxf6 { [%eval 0.27] } { A curious position: the remaining pieces are undeveloped. Black has two sets of doubled pawns -- undesirable but not fatal. } 14. b3 { [%eval 0.36] } 14... Bg7 { [%eval 0.3] } 15. Nd2 { [%eval 0.28] } 15... Kd7 { [%eval 0.33] } 16. Rfd1 { [%eval 0.25] } 16... f5 { [%eval 0.17] } 17. Rac1 { [%eval 0.23] } 17... Bb2 { [%eval 0.23] } 18. Rb1 { [%eval 0.3] } 18... Be5 { [%eval 0.28] } 19. Nf3 $14 { [%eval 0.33] } 19... Bf6 { [%eval 0.6] } (19... Rhe8) 20. Nd4 { [%eval 0.73] } 20... Bxd4 { [%eval 0.77] } 21. Rxd4 { [%eval 0.68] } { A double-Rook endgame has arisen. Coordinated Rooks are a strong attacking force, and when both sides' Rooks are active there is a strong bias towards a draw. But as we see, if you cannot or will not activate your Rooks while your opponent can activate theirs, you will face defeat. } 21... Rhg8?! $16 { [%eval 1.06] } (21... Rb5 $14) 22. Ra4 { [%eval 1.02] } 22... Ra8 { [%eval 1.1] } 23. Rd1 $16 { [%eval 0.95] } { White is getting more active and Black's position is getting critical. } 23... a6?! $18 { [%eval 1.92] } { Inaccuracy. c5 was best. } { Now White's Rooks jump all over your position. } (23... c5! { stops White's d1 Rook entering the game so easily. }) 24. Rdd4! $18 { [%eval 1.99] } 24... Ke6 { [%eval 2.43] } 25. Rh4 { [%eval 2.31] } 25... Rg6 { [%eval 2.29] } 26. Ra5 { [%eval 2.16] } 26... Ra7 { [%eval 2.72] } 27. Rha4 { [%eval 3.02] } 27... Rg4 { [%eval 2.77] } 28. Rxa6 { [%eval 2.77] } 28... Rxa4 { [%eval 2.52] } 29. Rxa4 $18 { [%eval 1.99] } 29... Rb7? $18 { [%eval 4.21] } { Mistake. Rxa4 was best. } { I don't have any good advice for you but I don't think your move is a mistake. } (29... Rxa4 { I would be wary of this move but Stockfish's first thought is to advise it. The distant passed a-pawn might be weak or a winner! I expect it's a winner, as we can see if we go deep enough... } 30. bxa4 c5 31. a5 Kd7 32. a6 Kc6 33. h4 Kb6 34. Kh2 Kxa6 35. Kg3 Kb5 36. Kf4 Kb4 37. Kxf5 c4 38. a4 Kxa4 39. g4 { White can make a Queen in 5 moves, Black in 7. } 39... Kb4 40. h5 Kc3 41. g5 hxg5 42. h6 Kxc2 43. h7 c3 44. h8=Q Kd2 45. Qd4+ $18) 30. Rh4 { [%eval 4.16] } 30... Ra7 { [%eval 4.49] } 31. a4 { [%eval 4.28] } 31... c5 { [%eval 4.38] } 32. Rxh6+ { [%eval 4.39] } 32... Kd5 { [%eval 4.52] } 33. Rf6 { [%eval 4.5] } 33... c4 { [%eval 4.38] } 34. Rxf5+ { [%eval 4.4] } 34... Ke6 { [%eval 4.46] } 35. Rb5 { [%eval 4.49] } 35... cxb3 { [%eval 4.55] } 36. cxb3 { [%eval 4.51] } 36... c6 { [%eval 4.49] } 37. Rb4 { [%eval 4.34] } 37... c5 { [%eval 4.36] } 38. Rc4 { [%eval 3.88] } 38... Kd5 { [%eval 4.36] } 39. h4 { [%eval 4.01] } 39... Rb7 { [%eval 4.08] } 40. h5 { [%eval 3.77] } 40... Rxb3 { [%eval 3.72] } 41. Rh4 { [%eval 3.46] } 41... c4 { [%eval 3.26] } { You're fighting hard and almost get your draw. } 42. h6 { [%eval 3.08] } 42... c3?? $18 { [%eval 6.81] } { Blunder. Rb1+ was best. } 43. Rd4+?? $10 { [%eval 0.0] } { Blunder. h7 was best. } { This check only makes it harder for White to make a Queen. } (43. h7 c2 44. h8=Q c1=Q+ 45. Kh2 $18) 43... Kc5 { [%eval 0.0] } 44. h7 $10 { [%eval -0.07] } 44... c2?? $18 { [%eval 6.51] } { Blunder. Rb1+ was best. } (44... Rb1+ 45. Kh2 Rb8 $10) 45. h8=Q { [%eval 6.49] } 45... c1=Q+ { [%eval 6.71] } 46. Kh2 { [%eval 6.44] } 46... Rb6?? { [%eval #16] } { Checkmate is now unavoidable. Rxe3 was best. } 1-0


[Event "WWoE Jamboree 2025: U18A ___________________"]
[Site "https://lichess.org/study/khPVCJwn/h5yxaIf7"]
[Result "*"]
[Variant "Standard"]
[ECO "?"]
[Opening "?"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "U18A ___________________"]
[UTCDate "2025.01.13"]
[UTCTime "20:16:41"]

 *


[Event "WWoE Jamboree 2025: Yuxuan Wu -- Caleb Caleshu"]
[Site "https://lichess.org/study/khPVCJwn/e7eqGTqy"]
[Result "0-1"]
[Variant "Standard"]
[ECO "A84"]
[Opening "Dutch Defense: Classical Variation"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Yuxuan Wu -- Caleb Caleshu"]
[UTCDate "2025.01.28"]
[UTCTime "22:10:48"]

{ What I have of this game shows steady play from both players, after which I know you faced a lot of pressure on the board and on the clock before you won -- well done. }
1. d4 { [%eval 0.17] } 1... e6 { [%eval 0.37] } 2. c4 { [%eval 0.16] } 2... f5 { [%eval 0.41] } 3. Bf4 { [%eval 0.29] } 3... Nf6 { [%eval 0.34] } 4. e3 { [%eval 0.21] } 4... Bb4+ { [%eval 0.22] } 5. Nc3 { [%eval 0.0] } 5... Bxc3+ { [%eval 0.0] } 6. bxc3 { [%eval -0.08] } 6... d6 { [%eval 0.0] } 7. Be2 { [%eval -0.12] } 7... O-O { [%eval -0.05] } 8. Nh3 { [%eval -0.28] } 8... Qe7 { [%eval -0.33] } 9. O-O { [%eval -0.31] } 9... h6 { [%eval -0.05] } { I expect that is too cautious. } 10. Bg3 { [%eval -0.01] } 10... e5 { [%eval -0.03] } 11. c5 { [%eval 0.0] } { White correctly takes the chance to undouble the pawns, but they have other problems in finding a role for the minor pieces, none of which stand well -- indeed the Nh3 is stalemated. } 11... Ne4 { [%eval 0.07] } 12. cxd6 { [%eval -0.08] } 12... cxd6 { [%eval -0.13] } 13. dxe5 { [%eval -0.48] } 13... Nxg3 { [%eval 0.06] } { Stockfish wants you to sac a pawn here: } (13... dxe5! 14. Qd5+ Be6 15. Qxe5 Nc6 16. Qb5 Nxc3 17. Qd3 Nxe2+ 18. Qxe2 $15) 14. hxg3 { [%eval -0.17] } 14... dxe5 { [%eval -0.17] } 15. Bc4+ { [%eval -0.17] } 15... Be6 { [%eval 0.0] } 16. Qb3 { [%eval 0.1] } 16... Bxc4 { [%eval 0.14] } 17. Qxc4+ { [%eval 0.0] } 17... Qf7 { [%eval 0.05] } 18. Qb5 { [%eval 0.19] } 18... Nc6 { [%eval 0.22] } 19. Rab1?! { [%eval -0.38] } { Inaccuracy. c4 was best. } 19... Rab8?! { [%eval 0.07] } { Perhaps missing a chance, but not a big one nor one easy to choose, } (19... Qxa2! 20. Rb2 (20. Qxb7?? Rab8! $19) 20... Qf7 21. Qxb7 Qxb7 22. Rxb7 a5 $17) 20. a4 { [%eval -0.11] } 20... Qc7 { [%eval 0.19] } 21. Rfd1 { [%eval 0.17] } 21... b6 { [%eval 0.26] } 22. Qd5+ { [%eval 0.16] } 22... Kh7 { [%eval 0.18] } 23. g4 { [%eval 0.0] } 23... Rbd8 { [%eval 0.01] } 24. Qe6 { [%eval -0.12] } 24... Rf6 { [%eval -0.1] } 25. Qc4 { [%eval -0.02] } 25... Qf7 { [%eval 0.16] } 26. Qe2 { [%eval -0.15] } 26... Rf8?! { [%eval 0.62] } { Inaccuracy. Qg6 was best. } 0-1


[Event "WWoE Jamboree 2025: Leon Nelson -- Caleb Caleshu"]
[Site "https://lichess.org/study/khPVCJwn/pRFTOysT"]
[Result "0-1"]
[Variant "Standard"]
[ECO "A13"]
[Opening "English Opening: Agincourt Defense"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Leon Nelson -- Caleb Caleshu"]
[UTCDate "2025.01.16"]
[UTCTime "10:02:13"]

{ A fluctuating struggle, with some difficult strategy for both sides to sort out, but the advantage lay with White for the most part, to a decisive level at times, and you did well to draw. }
1. c4 { [%eval 0.12] } 1... e6 { [%eval 0.25] } 2. g3 { [%eval 0.14] } 2... f5 { [%eval 0.6] } { I've played the Dutch against the English in several games and believe it to be an excellent practical try. } 3. Bg2 { [%eval 0.52] } 3... Nf6 { [%eval 0.52] } 4. Nc3 { [%eval 0.5] } 4... Bb4 { [%eval 0.38] } (4... Be7) 5. e3 { [%eval -0.07] } 5... O-O { [%eval 0.46] } (5... Bxc3! { before Nge2 }) 6. Nge2 { [%eval 0.45] } { Now the Bb4 looks a bit misplaced. } 6... d6 { [%eval 0.47] } 7. O-O { [%eval 0.43] } 7... e5 { [%eval 0.81] } 8. d4 $14 { [%eval 0.31] } 8... e4 $14 { [%eval 0.68] } (8... c6) (8... Qe8) 9. Nf4?! { [%eval -0.26] } { Inaccuracy. Nd5 was best. } 9... Bxc3 $15 { [%eval -0.43] } { I'm sure you're right to take the chance to mess up White's pawns, but you miss the dark-squared Bishop for the rest of the game. } 10. bxc3 { [%eval -0.38] } 10... g5 { [%eval -0.26] } 11. Nh5 $10 { [%eval -0.3] } 11... Qe8?? $16 { [%eval 1.53] } { Blunder. g4 was best. } { The double question mark from Stockfish seems harsh. } (11... Be6 12. Nxf6+ Qxf6 13. f3 Bxc4) (11... Nbd7 12. Nxf6+ Nxf6) (11... g4 $10) 12. Nxf6+ { [%eval 1.15] } 12... Rxf6 { [%eval 1.34] } { Black looks a little overstretched on the King's-side. } 13. f3 { [%eval 1.54] } 13... Rh6 { [%eval 1.77] } 14. h3? { [%eval 0.55] } { Mistake. fxe4 was best. } (14. fxe4 fxe4 15. Qc2 Re6 16. c5 $18 { and it is White who has a strong attack on the King's-side. }) 14... Nc6 { [%eval 0.89] } 15. fxe4 { [%eval 0.43] } 15... fxe4 { [%eval 0.38] } 16. g4 $10 { [%eval 0.04] } { It's about equal. } 16... Ne7? $16 { [%eval 1.18] } { Mistake. Na5 was best. } (16... Na5 { is more awkward for White to meet. }) 17. Rb1 { [%eval 1.38] } 17... Ng6 { [%eval 1.21] } 18. Qc2 { [%eval 1.28] } 18... c6 { [%eval 1.56] } 19. Ba3 { [%eval 1.5] } 19... Nh4 $16 { [%eval 1.36] } 20. Qf2?? $15 { [%eval -0.49] } { Blunder. Bh1 was best. } (20. Bxe4!? { and }) (20. Bh1!? { are better }) 20... Nxg2?! { [%eval 0.51] } { Inaccuracy. b6 was best. } (20... b6! { Now White has nothing on the Queen's-side, and you might have an edge. }) 21. Kxg2 { [%eval 0.1] } (21. Qxg2! { keeps Black tied to the defence of e4. }) 21... b6 $10 { [%eval 0.14] } { Now White should play, and Black prevent, c4-c5. } 22. Qg3? { [%eval -1.19] } { Mistake. c5 was best. } (22. c5 $10) 22... Qe7?? { [%eval 1.26] } { Blunder. c5 was best. } (22... c5! $17) 23. c5! $16 { [%eval 1.07] } { White found it in the end. } 23... bxc5? $18 { [%eval 2.63] } { Mistake. dxc5 was best. } (23... dxc5 24. dxc5 Ba6 25. Rf5 Re8 $16 { and Black is hanging on. }) 24. dxc5 { [%eval 2.19] } 24... d5 { [%eval 2.6] } { White's major pieces are all better than Black's. } 25. Rb8?! $16 { [%eval 1.5] } { Inaccuracy. c4 was best. } 25... Rxb8 { [%eval 1.56] } 26. Qxb8 { [%eval 1.25] } 26... Qd7?! { [%eval 2.41] } { Inaccuracy. Qe8 was best. } 27. Qe5 { [%eval 2.36] } 27... Rg6?! $18 { [%eval 3.52] } { Inaccuracy. Re6 was best. } (27... Re6 $16 { is better according to Stockfish, but that's a tough move to find and tougher to play. } 28. Qxg5+ Rg6 29. Qf4) 28. Rf6?? $14 { [%eval 0.69] } { Blunder. c4 was best. } (28. c4! { cracks open Black's defences; Bb2 is very dangerous. }) 28... Rxf6 { [%eval 0.77] } 29. Qxf6 { [%eval 0.75] } 29... Qf7 { [%eval 0.69] } 30. Qd8+ { [%eval 0.64] } 30... Qf8 { [%eval 0.82] } 31. Qxg5+ { [%eval 0.85] } 31... Kh8?! { [%eval 1.8] } { Inaccuracy. Qg7 was best. } 32. Qe5+? $14 { [%eval 0.64] } { Mistake. Qf4 was best. } 32... Kg8 { [%eval 0.71] } 33. Qg3?! { [%eval 0.16] } { Inaccuracy. Qg5+ was best. } 33... Ba6 { [%eval 0.2] } 34. Qf4 $10 { [%eval 0.2] } 0-1


[Event "WWoE Jamboree 2025: Caleb Caleshu Sai Dheerey"]
[Site "https://lichess.org/study/khPVCJwn/CSibClb1"]
[Result "1-0"]
[Variant "Standard"]
[ECO "C10"]
[Opening "Sicilian Defense: Marshall Gambit"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Caleb Caleshu Sai Dheerey"]
[UTCDate "2025.01.16"]
[UTCTime "10:10:12"]

{ A very competent and controlled win. Black played a terribly risky opening, and lost a piece for a couple of pawns, after which, although they fought long and hard, the result was never in doubt. }
1. e4 { [%eval 0.18] } 1... e6 { [%eval 0.28] } 2. d4 { [%eval 0.28] } 2... d5 { [%eval 0.33] } 3. Nc3 { [%eval 0.28] } 3... c5?! { [%eval 1.11] } { Inaccuracy. dxe4 was best. } { Frank Marshall used to play this, but I think we now understand that Black shouldn't play ...c5 unless White closes the centre, or makes some other concession (like Nd2). } 4. exd5 { [%eval 0.95] } 4... exd5 { [%eval 1.09] } 5. dxc5 { [%eval 0.97] } 5... d4 { [%eval 1.28] } { This was Frank's idea. } 6. Nb5 { [%eval 0.88] } (6. Bb5+ { and }) (6. Ne4 { are the recommended antidotes, but there's not a lot wrong with your move either. }) 6... Bxc5 { [%eval 0.82] } 7. Bf4 $14 { [%eval 0.84] } 7... Bb4+?? $18 { [%eval 2.71] } { Blunder. Na6 was best. } (7... Na6 { keeps Black on the board. }) 8. c3 { [%eval 3.34] } 8... dxc3 { [%eval 3.26] } 9. bxc3 $18 { [%eval 3.23] } (9. Qxd8+ Kxd8 10. O-O-O+ Nd7 11. bxc3 Ba5 12. Nd6 $18 { is just as good }) 9... Qxd1+?! { [%eval 4.82] } { Inaccuracy. Ba5 was best. } (9... Ba5 10. Qxd8+ Kxd8 11. O-O-O+ Ke7 12. Nf3 { and Black's position is pretty filthy but material is level }) 10. Rxd1 { [%eval 4.73] } 10... Ba5 { [%eval 4.63] } 11. Nd6+ { [%eval 4.6] } 11... Kf8 { [%eval 4.61] } 12. Nxc8 { [%eval 4.65] } 12... Bxc3+ { [%eval 4.66] } 13. Bd2 { [%eval 4.66] } 13... Bxd2+ { [%eval 4.49] } 14. Rxd2 { [%eval 4.65] } 14... Nc6 { [%eval 4.52] } { White has a piece for a pawn and Black doesn't have any likely swindling opportunities. } 15. Nd6 { [%eval 4.73] } 15... b6 { [%eval 5.23] } 16. Bb5 { [%eval 5.13] } 16... Nge7 { [%eval 5.27] } 17. Nf3 { [%eval 5.19] } 17... h6 { [%eval 5.63] } 18. O-O { [%eval 5.44] } 18... g5 { [%eval 5.3] } 19. Rc1 { [%eval 5.51] } 19... Nb4 { [%eval 5.77] } 20. h3 { [%eval 5.85] } 20... Rd8 { [%eval 5.73] } 21. Ne4?! { [%eval 4.44] } { Inaccuracy. Ne5 was best. } 21... Rxd2 { [%eval 4.29] } 22. Nexd2 { [%eval 4.31] } 22... Nxa2 { [%eval 4.7] } { Black has a second pawn for the piece, but their remaining pieces are uncoordinated. } 23. Rc7 { [%eval 4.57] } 23... a5 { [%eval 4.6] } 24. Rb7 { [%eval 3.79] } 24... Nc8?! { [%eval 5.71] } { Inaccuracy. Nc3 was best. } 25. Ne5?! { [%eval 4.46] } { Inaccuracy. Ne4 was best. } 25... Nc3?! { [%eval 6.37] } { Inaccuracy. Nd6 was best. } 26. Rxf7+ { [%eval 6.25] } 26... Kg8 { [%eval 6.2] } 27. Bc4?! { [%eval 4.76] } { Inaccuracy. Rd7 was best. } 27... Nd6 { [%eval 4.67] } 28. Rb7+ { [%eval 4.54] } 28... Nxc4 { [%eval 4.55] } 29. Ndxc4 { [%eval 4.22] } 29... b5 { [%eval 4.95] } 30. Nxa5 { [%eval 4.45] } 30... Rh7 { [%eval 4.42] } 31. Rb8+ { [%eval 4.53] } 31... Kg7 { [%eval 4.4] } 32. Rb7+ { [%eval 4.41] } { A little shuffle to gain time on the clock? } 32... Kg8 { [%eval 4.38] } 33. Rxh7 { [%eval 4.1] } 33... Kxh7 { [%eval 4.02] } 34. Kf1 { [%eval 4.02] } 34... Kg7 { [%eval 3.94] } 35. Ke1 { [%eval 3.98] } 35... Kf6 { [%eval 3.96] } 36. Ng4+ { [%eval 3.96] } 36... Kg6 { [%eval 4.01] } 37. Kd2 { [%eval 4.09] } 37... b4 { [%eval 4.0] } 38. Nc6 { [%eval 3.72] } 38... h5 { [%eval 4.37] } 39. Nge5+ { [%eval 4.41] } 39... Kf5 { [%eval 4.47] } 40. Nd3 { [%eval 4.56] } 40... Ne4+ { [%eval 4.71] } 41. Ke3 { [%eval 4.64] } 41... Nf6 { [%eval 5.2] } 42. Nd4+ { [%eval 5.03] } 42... Kg6 { [%eval 5.1] } 43. Nxb4 { [%eval 5.04] } { With the loss of this pawn, Black's hopes have vanished. } 43... h4 { [%eval 5.1] } 44. Nd3 { [%eval 5.12] } 44... Kh5 { [%eval 5.62] } 45. Kf3 { [%eval 5.44] } 45... Kg6 { [%eval 5.99] } 46. Ne5+ { [%eval 5.78] } 46... Kh5 { [%eval 5.86] } 47. Ng4 { [%eval 5.72] } 47... Nd5 { [%eval 5.66] } 48. Nf5 { [%eval 5.58] } 48... Kg6 { [%eval 5.29] } 49. Nfe3 { [%eval 5.27] } 49... Nf4 { [%eval 6.25] } 50. Ke4 { [%eval 6.18] } 50... Ne6 { [%eval 6.13] } 51. Ne5+ { [%eval 5.95] } 51... Kf6 { [%eval 6.29] } 52. N3g4+ { [%eval 6.15] } 52... Kg7 { [%eval 6.39] } 53. Kf5 { [%eval 6.28] } 53... Nd4+ $18 { [%eval 6.25] } { There may have been more moves but this is crushing. } 1-0


[Event "WWoE Jamboree 2025: Suraj Rajesh Jack Wills"]
[Site "https://lichess.org/study/khPVCJwn/teJTkA8K"]
[Result "0-1"]
[Variant "Standard"]
[ECO "D02"]
[Opening "Queen's Pawn Game: London System"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Suraj Rajesh Jack Wills"]
[UTCDate "2025.01.16"]
[UTCTime "10:20:11"]

{ After a level opening, White lost their hold and Black took a firm grip on the game. }
1. d4 { [%eval 0.17] } 1... Nf6 { [%eval 0.19] } 2. Nf3 { [%eval 0.11] } 2... d5 { [%eval 0.11] } 3. Bf4 { [%eval 0.04] } 3... c5 { [%eval 0.11] } 4. e3 { [%eval 0.0] } 4... Qb6 { [%eval 0.09] } 5. Qc1 { [%eval -0.18] } { This already looks unpromising for White. } (5. Nc3 c4 (5... a6)) 5... Nc6 { [%eval -0.09] } 6. c3 { [%eval -0.11] } 6... Bf5 { [%eval 0.0] } 7. Nbd2 { [%eval -0.14] } 7... e6 { [%eval -0.03] } 8. Be2 { [%eval -0.21] } 8... Be7 { [%eval -0.15] } 9. O-O { [%eval -0.29] } 9... O-O { [%eval -0.19] } 10. Nh4 { [%eval -0.18] } 10... Bg6 { [%eval 0.26] } { Giving up the Bishop without a fight. } (10... Bg4!? { seems playable, but it's easier for Stockfish to declare this move is OK than for a human. } 11. f3 Bh5 12. g4 cxd4 13. gxh5 Nxh5 14. Bg3 d3 15. Bd1 Qxe3+) 11. Nxg6 { [%eval 0.17] } 11... hxg6 { [%eval 0.1] } 12. Qc2 { [%eval 0.07] } 12... Rac8 { [%eval 0.06] } 13. Qb3 { [%eval 0.02] } 13... Qxb3 { [%eval 0.0] } 14. axb3 { [%eval -0.01] } 14... a6 { [%eval 0.33] } 15. Nf3 { [%eval 0.03] } 15... Nd7 { [%eval 0.37] } 16. Rfc1 { [%eval 0.38] } 16... Rfe8 $14 { [%eval 0.43] } { White has perhaps the better chances here (Bishop pair) but it all starts to slip away from them now. } 17. c4?! { [%eval -0.07] } (17. h3 { or }) (17. h4 { is better. }) 17... Nb4!? { [%eval 0.08] } (17... g5! 18. Nxg5 cxd4 $15) 18. cxd5?! { [%eval -0.49] } { Inaccuracy. h4 was best. } 18... Nxd5 { [%eval -0.44] } 19. Bg3 { [%eval -0.55] } 19... cxd4 { [%eval -0.44] } 20. Nxd4 $15 { [%eval -0.75] } { The exchanges have exposed White's doubled pawns, yet they are not easy to get at here. } 20... Bf6?! $10 { [%eval -0.2] } { Inaccuracy. Nc5 was best. } (20... Nc5! { is the best try }) 21. Bf3?! $15 { [%eval -0.78] } { Inaccuracy. Bd6 was best. } 21... Nc5 { [%eval -0.77] } 22. Bxd5?! $17 { [%eval -1.53] } { Inaccuracy. Rd1 was best. } 22... exd5 { [%eval -1.41] } 23. Rc2? $19 { [%eval -3.36] } { Mistake. Rc3 was best. } { Losing. } (23. Rc3 $17 { Black has very good chances after } 23... Bxd4 24. exd4 Ne6 25. Rd1 Nxd4! $19) 23... Bxd4 { [%eval -3.35] } 24. exd4 { [%eval -3.62] } 24... Nxb3 { [%eval -3.7] } 25. Rxc8 { [%eval -3.61] } 25... Rxc8 { [%eval -3.49] } 26. Rd1 { [%eval -3.86] } 26... Nxd4! { [%eval -3.18] } { Just to let them know who is winning. The proud London bishop is curiously ineffective. } 27. h3 { [%eval -3.94] } 27... Ne2+ { [%eval -3.77] } 28. Kf1 { [%eval -4.04] } 28... Nxg3+ { [%eval -4.03] } 29. fxg3 { [%eval -3.93] } 29... Rd8 $19 { [%eval -3.26] } (29... Rc5! $19 { It's nearly always better to defend with a Rook from the side, as the piece doesn't lose so many options. It doesn't make a difference in this game, but next time it might! }) 30. Ke2 { [%eval -3.57] } 30... f6 { [%eval -3.12] } 31. Kd3 { [%eval -3.46] } 31... Kf7 { [%eval -3.05] } 32. Rc1 { [%eval -2.95] } 32... Rd7 { [%eval -2.77] } 33. Re1?! { [%eval -3.78] } { Inaccuracy. Kd4 was best. } 33... Re7 { [%eval -3.65] } 34. Rc1 { [%eval -3.66] } 34... Ke6 { [%eval -3.54] } 35. Re1+ { [%eval -4.16] } 35... Kd6 { [%eval -4.28] } 36. Rc1 { [%eval -4.23] } 36... Re4 { [%eval -4.17] } 37. Rc8 { [%eval -4.2] } 37... Rb4 { [%eval -4.17] } 38. Rg8 { [%eval -4.69] } 38... Rxb2 { [%eval -4.56] } 39. Rxg7 { [%eval -4.49] } 39... g5 { [%eval -4.35] } 40. h4 { [%eval -4.94] } 40... Rxg2 { [%eval -4.85] } 41. hxg5 { [%eval -4.86] } 41... Rxg3+ { [%eval -4.8] } 42. Kd2 { [%eval -4.74] } 42... Rxg5 { [%eval -4.94] } 43. Rxb7 { [%eval -4.8] } 43... Kc6 { [%eval -4.08] } 44. Re7 { [%eval -4.55] } 44... Re5 { [%eval -4.47] } 45. Rf7 { [%eval -4.94] } 45... f5 { [%eval -4.95] } 46. Kd3 { [%eval -4.87] } 46... a5 { [%eval -4.76] } 47. Kd4 { [%eval -5.54] } 47... Re4+ { [%eval -5.92] } 48. Kd3 { [%eval -5.9] } 48... f4 { [%eval -5.76] } 49. Rf8 { [%eval -5.89] } 49... a4 { [%eval -5.59] } 50. Rf6+ { [%eval -6.28] } 50... Kc5 { [%eval -6.22] } 51. Rf8 { [%eval -6.29] } 51... a3 { [%eval -6.0] } 52. Rc8+ { [%eval -6.18] } 52... Kd6 { [%eval -6.12] } 53. Rd8+ { [%eval -5.99] } 53... Kc6 { [%eval -5.98] } 54. Ra8 { [%eval -5.62] } 54... f3 $19 { [%eval -5.54] } 0-1


[Event "WWoE Jamboree 2025: Jack Wills James Thomas"]
[Site "https://lichess.org/study/khPVCJwn/dBlsK7JB"]
[Result "1/2-1/2"]
[Variant "Standard"]
[ECO "A59"]
[Opening "Benko Gambit Accepted: King Walk Variation"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Jack Wills James Thomas"]
[UTCDate "2025.01.16"]
[UTCTime "10:28:47"]

{ A very typical benko struggle (haven't i seen you play this with black?)
White couldn't do much with the pawn against black's initiative, but on the other hand black couldn't find a way through. }
1. d4 { [%eval 0.17] } 1... Nf6 { [%eval 0.19] } 2. c4 { [%eval 0.18] } 2... c5 { [%eval 0.56] } 3. d5 { [%eval 0.47] } 3... b5 { [%eval 0.53] } 4. cxb5 { [%eval 0.47] } 4... a6 { [%eval 0.6] } 5. bxa6 { [%eval 0.52] } 5... Bxa6 { [%eval 0.69] } 6. Nf3 { [%eval 0.55] } 6... d6 { [%eval 0.58] } 7. Nc3 { [%eval 0.67] } 7... g6 { [%eval 0.64] } 8. e4 { [%eval 0.75] } 8... Bxf1 { [%eval 0.72] } 9. Kxf1 { [%eval 0.76] } 9... Bg7 { [%eval 0.88] } 10. g3 { [%eval 0.83] } 10... O-O { [%eval 0.79] } 11. Kg2 { [%eval 0.75] } 11... Nbd7 { [%eval 0.78] } 12. Rb1 { [%eval 0.33] } 12... Qa5 { [%eval 0.33] } 13. Qc2 $10 { [%eval 0.22] } (13. a3 { Busch, Karl - Cade, Stephen, 1/2-1/2, CM.2000.0.00121, https://lichess.org/ITg94Ch6 }) 13... Rfb8 $14 { [%eval 0.46] } { A normal Benko position. The Benko is not a typical gambit; the compensation is positional, and lasts into the endgame -- indeed, endgames are often better for Black. } 14. Nd2?! { [%eval -0.29] } { Inaccuracy. a4 was best. } 14... Qa6 { [%eval -0.17] } 15. b3 { [%eval -0.23] } 15... Ne5 { [%eval -0.3] } 16. a4 { [%eval -0.34] } 16... Qd3?! { [%eval 0.27] } { Inaccuracy. c4 was best. } 17. Qxd3 { [%eval 0.24] } 17... Nxd3 { [%eval 0.25] } 18. Nb5 { [%eval 0.0] } 18... Ng4 { [%eval 0.05] } 19. Rf1 { [%eval 0.0] } 19... Bh6 { [%eval 0.0] } 20. h3 { [%eval 0.0] } 20... Nxc1 { [%eval 0.0] } 21. Rfxc1 { [%eval -0.04] } 21... Bxd2 { [%eval 0.01] } 22. Rd1 { [%eval -0.51] } 22... Nf6 { [%eval -0.41] } 23. Rxd2 { [%eval -0.39] } 23... Nxe4 { [%eval -0.44] } 24. Re2 { [%eval -0.45] } 24... Rxb5 { [%eval -0.49] } 25. Rxe4 { [%eval -0.45] } 25... Rb7 { [%eval -0.45] } 26. Rc4 { [%eval -0.57] } 26... Rab8 $15 { [%eval -0.61] } 27. Rc3?! $17 { [%eval -1.36] } { Inaccuracy. Re1 was best. } { This is the best position Black gets all game. } (27. Re1! Kf8 28. Rce4! { keeping the Rooks active is important. }) 27... Rb4?! { [%eval -0.62] } { Inaccuracy. Kf8 was best. } { 27...Kf8 would stop White's next idea. } 28. Re1! { [%eval -0.58] } { improves the activity of the Rook } 28... Kf8 { [%eval -0.39] } 29. Ree3 { [%eval -0.44] } 29... f5 $10 { [%eval -0.44] } 30. f4?! { [%eval -0.8] } { If you're defending an endgame, don't make weaknesses. } (30. Kf3 g5 31. Ke2 f4 32. Rf3 $15) 30... h5 { [%eval -0.76] } 31. h4 { [%eval -0.67] } 31... Ke8 { [%eval -0.26] } 32. Kf3 { [%eval -0.35] } 32... Kd7 { [%eval -0.29] } 33. Ke2 $15 { [%eval -0.37] } 33... Ke8 $10 { [%eval -0.12] } 1/2-1/2


[Event "WWoE Jamboree 2025: Ben Darlington - Jack Wills"]
[Site "https://lichess.org/study/khPVCJwn/34hKxP95"]
[Result "0-1"]
[Variant "Standard"]
[ECO "A15"]
[Opening "English Opening: Anglo-Indian Defense"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Ben Darlington - Jack Wills"]
[UTCDate "2025.01.16"]
[UTCTime "10:43:25"]

{ Very much a game of two halves.
Black lost a pawn early on which could have been decisive but material equality was soon restored and an interesting positional battle followed, where White had the advantage for the most part. Black held on and eventually found a way through, when White's defences collapsed. }
1. c4 { [%eval 0.12] } 1... Nf6 { [%eval 0.21] } 2. g3 { [%eval 0.11] } 2... g6 { [%eval 0.25] } 3. Bg2 { [%eval 0.18] } 3... Bg7 { [%eval 0.34] } 4. Nc3 { [%eval 0.12] } 4... O-O { [%eval 0.28] } 5. e3 { [%eval 0.0] } 5... e5 { [%eval 0.17] } 6. Nge2 { [%eval 0.14] } 6... d6 { [%eval 0.1] } 7. O-O $10 { [%eval 0.05] } 7... Be6?! { [%eval 0.92] } { Inaccuracy. Re8 was best. } { undefending the b-Pawn.
This could have lost on the spot. } 8. Bxb7 { [%eval 1.06] } 8... Nbd7 { [%eval 1.13] } 9. Bg2 { [%eval 0.85] } (9. Bxa8 Qxa8 10. f3 Bxc4) 9... Rb8?! { [%eval 1.71] } { Inaccuracy. Bxc4 was best. } 10. b3 { [%eval 1.6] } 10... Nh5?! $16 { [%eval 2.22] } { Inaccuracy. Re8 was best. } 11. Bb2?! $16 { [%eval 1.32] } { Inaccuracy. d4 was best. } (11. d4! { threatens to embarrass the black bishop } 11... Bxc4) 11... Bxc4 { [%eval 1.25] } { TACTIC: pin } 12. bxc4 { [%eval 1.27] } 12... Rxb2 $16 { [%eval 1.29] } { White no longer has the pawn, but has the better position } 13. Nb5 { [%eval 0.73] } 13... a6 { [%eval 0.79] } 14. Na7 { [%eval 0.42] } 14... Nc5 { [%eval 0.41] } 15. Nc6 $10 { [%eval 0.15] } 15... Qd7 { [%eval 0.46] } 16. Nc3?! { [%eval -0.2] } { Inaccuracy. d4 was best. } 16... Rb6 { [%eval 0.22] } 17. Na5 { [%eval 0.01] } 17... Nf6 { [%eval 0.38] } 18. Rb1 { [%eval 0.39] } 18... Rfb8 { [%eval 0.86] } 19. Rxb6 { [%eval 0.83] } 19... Rxb6 { [%eval 0.99] } 20. d4 { [%eval 1.04] } 20... exd4 { [%eval 1.03] } 21. exd4 { [%eval 0.99] } 21... Ne6 { [%eval 1.18] } 22. Bh3 { [%eval 1.2] } 22... d5 $16 { [%eval 1.15] } { White is still better here but the next move gives away the advantage } 23. c5?! $10 { [%eval 0.08] } { Inaccuracy. Na4 was best. } 23... Rb8 { [%eval 0.16] } 24. Re1 { [%eval 0.17] } 24... c6? { [%eval 1.3] } { Mistake. Re8 was best. } 25. Na4?! { [%eval 0.45] } { Inaccuracy. Bxe6 was best. } (25. Bxe6 fxe6 26. Qe2 { forks e6 and a6 }) 25... Qc7 { [%eval 0.43] } 26. Nb6 { [%eval 0.4] } 26... Ne4 { [%eval 0.52] } 27. Bxe6 { [%eval 0.45] } 27... fxe6 $14 { [%eval 0.5] } { Now the game swings abruptly in Black's favour. } 28. Qg4? { [%eval -0.99] } { Mistake. Kg2 was best. } 28... Qf7 $17 { [%eval -1.03] } 29. Re2?? $19 { [%eval -3.14] } { Blunder. Rxe4 was best. } 29... Bxd4 { [%eval -3.4] } 30. Qf4 { [%eval -3.38] } 30... Qxf4 { [%eval -3.11] } 31. gxf4 { [%eval -3.4] } 31... Bxc5 { [%eval -3.38] } 32. Nd7 { [%eval -3.36] } 32... Rb1+ { [%eval -3.33] } 33. Kg2 { [%eval -3.0] } 33... Bxf2 { [%eval -3.06] } 34. Nf6+? { [%eval -5.12] } { Mistake. Nxc6 was best. } 34... Nxf6 { [%eval -5.08] } 35. Kxf2 { [%eval -5.02] } 35... Ne4+ { [%eval -4.94] } 36. Kg2 { [%eval -5.16] } 36... c5 { [%eval -5.04] } 37. Nb3 { [%eval -5.51] } 37... Kf7 { [%eval -5.39] } 38. Rc2 { [%eval -5.51] } 38... c4 { [%eval -5.54] } 39. Nd4 { [%eval -5.42] } 39... Rd1 { [%eval -5.36] } 40. Nf3 { [%eval -5.87] } 40... Kf6 { [%eval -5.93] } 41. a4 { [%eval -5.96] } 41... Ra1 { [%eval -5.97] } 42. Nd4 { [%eval -6.03] } 42... Rxa4 { [%eval -6.0] } 43. f5 { [%eval -7.31] } 43... gxf5 { [%eval -7.32] } 44. h4 { [%eval -7.49] } 44... c3 { [%eval -7.43] } 45. h5? { [%eval #-17] } { Checkmate is now unavoidable. Ne2 was best. } 45... Rxd4 { [%eval -26.01] } 0-1


[Event "WWoE Jamboree 2025: Viacheslav Ovcharenko -- Jamie Glasson"]
[Site "https://lichess.org/study/khPVCJwn/CFzsMFdx"]
[Result "1-0"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[Variant "Standard"]
[ECO "C45"]
[Opening "Scotch Game: Potter Variation"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Viacheslav Ovcharenko -- Jamie Glasson"]
[UTCDate "2025.01.16"]
[UTCTime "10:57:56"]

{ White didn't get much out of the opening and black came up with an interesting try for the initiative. After a muddled stage featuring errors on both sides, White emerged a pawn ahead, upon which Black swapped everything off into a lost endgame. I thought you handled that end game very well }
1. e4 { [%eval 0.18] [%eval 0.18] } 1... e5 { [%eval 0.21] [%eval 0.21] } 2. Nf3 { [%eval 0.13] [%eval 0.13] } 2... Nc6 { [%eval 0.17] [%eval 0.17] } 3. d4 { [%eval 0.05] [%eval 0.0] } 3... exd4 { [%eval 0.04] [%eval 0.04] } 4. Nxd4 { [%eval 0.06] [%eval 0.06] } 4... Bc5 { [%eval 0.21] [%eval 0.21] } 5. Nb3 { [%eval 0.17] [%eval 0.17] } 5... Bb6 { [%eval 0.18] [%eval 0.18] } 6. Nc3 { [%eval 0.13] [%eval 0.13] } 6... Nf6 { [%eval 0.12] [%eval 0.12] } 7. Qe2 { [%eval 0.22] } { This is a move recommended by theory and very often played but it doesn't seem very promising for white } (7. a4 { Was all the rage when I was a boy } { Adams, Michael - Wells, Peter K, 1-0, Dublin zt, 1993, https://lichess.org/aYpd4eLE }) 7... O-O { [%eval 0.28] [%eval 0.28] } 8. Be3 { [%eval -0.16] [%eval -0.18] } 8... Re8 { [%eval 0.31] [%eval 0.26] } 9. f3 { [%eval 0.19] [%eval 0.43] } 9... d5 { [%eval 0.2] } { This move starts an interesting messy phase where the right moves for both sides are not obvious } 10. O-O-O { [%eval 0.43] [%eval 0.38] } 10... d4 $14 { [%eval 0.43] } { it's about equal
The D pawn is being held up by magic } 11. Na4? $17 { [%eval -1.0] } { Mistake. Qe1 was best.
Black has couple of interesting tactics here } 11... Be6?? $14 { [%eval 0.81] } { Blunder. Nxe4 was best. } { [%eval 0.73] } (11... Nxe4! 12. fxe4 Rxe4 { Tactic: pin }) (11... Rxe4 12. fxe4 Bg4! { Tactic: skewer }) 12. Nxb6?! $10 { [%eval -0.03] } { Inaccuracy. Kb1 was best. } { [%eval -0.06] } 12... axb6 { [%eval -0.03] [%eval -0.24] } 13. a3?? $19 { [%eval -2.81] } { Blunder. Kb1 was best. } { [%eval -2.88] } 13... Bxb3 { [%eval -2.91] [%eval -2.85] } 14. cxb3 { [%eval -2.92] } { Now to keep the advantage black needs to spot the tactic pointed out earlier } 14... Re7?? $16 { [%eval 1.2] } { Blunder. Nxe4 was best.
This gives away blacks advantage } (14... Qd6 $10) 15. b4?? $14 { [%eval -1.77] } { Blunder. Kb1 was best.
This hands the advantage straight back. } 15... Rd7?? { [%eval 0.54] } { Blunder. Nxe4 was best.
This was the last chance for black to play the tactic. } 16. Bg5 { [%eval 0.39] } { Now White has hopes of surrounding and capturing the d-pawn. As Nimzowitsch used to say: restrain, blockade, destroy! } 16... Ne5 { [%eval 0.43] [%eval 0.36] } 17. f4 { [%eval 0.36] [%eval 0.11] } 17... d3 { [%eval 0.56] [%eval 0.07] } 18. Qd2 { [%eval 0.18] [%eval 0.13] } 18... Nc4 { [%eval 0.17] [%eval 0.06] } 19. Qc3 { [%eval 0.43] [%eval 0.09] } 19... Ne3?! { [%eval 0.83] } { Inaccuracy. Nxe4 was best. } { [%eval 0.86] } 20. Rxd3 $16 { [%eval 0.79] } { White has succeeded in their aim. } 20... Nxf1 { [%eval 0.83] [%eval 0.79] } 21. Rxd7 { [%eval 0.85] [%eval 0.74] } 21... Qxd7 { [%eval 0.95] [%eval 0.82] } 22. Bxf6 $16 { [%eval 0.98] } { Black is by no means lost here but their next move loses the initiative allowing white to take over. } 22... Qd2+?? { [%eval 3.19] } { Blunder. gxf6 was best. } { [%eval 2.91] } 23. Qxd2 { [%eval 3.03] } 23... Nxd2 { [%eval 3.12] } 24. Kxd2 { [%eval 3.12] } 24... gxf6 { [%eval 3.06] } 25. Rd1 $18 { [%eval 2.86] } { White is a P ahead here and Black's only chance is to stay in the Rook end game. } 25... Rd8+?? { [%eval 3.0] } { Interestingly stockfish doesn't recognise the Rook exchange as a mistake -- perhaps because white is winning anyway -- but my advice to black is still keep the rooks on, because they are a drawing factor, and the king and pawn ending is just lost. } 26. Ke2 { [%eval 2.99] } 26... Rxd1 { [%eval 3.74] } 27. Kxd1 { [%eval 3.71] } 27... Kf8 { [%eval 3.6] } 28. Kd2 { [%eval 3.58] } 28... Ke8 { [%eval 3.8] } 29. Kd3 { [%eval 3.55] } 29... c6 { [%eval 4.3] } 30. g4 { [%eval 4.14] } 30... Kd7 { [%eval 4.38] } 31. h4 { [%eval 4.28] } 31... Ke6 { [%eval 4.93] } 32. Kd4 { [%eval 4.98] } 32... Ke7 { [%eval 4.79] } 33. a4 { [%eval 4.61] } 33... Ke6 $18 { [%eval 4.98] } { Both sides have strengthened their position as much as they can and white now needs to find a way through which they do accurately } 34. a5 { [%eval 4.82] } 34... bxa5?! { [%eval 6.88] } { Inaccuracy. Ke7 was best. } 35. bxa5 { [%eval 6.46] } 35... Kd7 { [%eval 7.11] } 36. Kc5 { [%eval 7.51] } 36... Kc7 { [%eval 7.6] } 37. b4 { [%eval 7.59] } 37... h6 { [%eval 8.35] } 38. g5 { [%eval 8.04] } 38... hxg5 { [%eval 9.26] } 39. fxg5 { [%eval 8.85] } 39... fxg5 { [%eval 10.02] } 40. hxg5 { [%eval 9.98] } 40... Kd7 { [%eval 9.41] } 41. Kb6 { [%eval 9.6] } 41... Kc8 { [%eval 10.29] } 42. e5 { [%eval 9.45] } 42... Kb8? { [%eval #15] } { Checkmate is now unavoidable. Kd7 was best. } 43. e6 { [%eval #14] } 43... fxe6 { [%eval #13] } 44. g6 { [%eval #13] } 44... e5 { [%eval #12] } 45. g7 { [%eval #11] } 45... Kc8 { [%eval #11] } 46. g8=Q+ { [%eval #7] } 46... Kd7 { [%eval #8] } 47. Kxb7 { [%eval #8] } 47... e4 { [%eval #6] } 48. Qg4+ { [%eval #6] } 1-0


[Event "WWoE Jamboree 2025: Toby Kubbentelly Viacheslav Ovcharenko"]
[Site "https://lichess.org/study/khPVCJwn/F2wd7tPI"]
[Result "0-1"]
[Variant "Standard"]
[ECO "A45"]
[Opening "Indian Defense: Tartakower Attack"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Toby Kubbentelly Viacheslav Ovcharenko"]
[UTCDate "2025.01.16"]
[UTCTime "11:03:57"]

{ White please the opening with little energy or accuracy and you came out winning a Pawn or two and converted the endgame for a nice win. However there was a little moment when it could all have gone wrong. }
1. d4 { [%eval 0.17] } 1... Nf6 { [%eval 0.19] } 2. g3 { [%eval 0.04] } 2... e6 { [%eval 0.2] } 3. Bg2 { [%eval 0.13] } 3... c5 { [%eval 0.14] } 4. Nf3 { [%eval 0.0] } 4... Nc6 { [%eval 0.37] } 5. c4 { [%eval 0.22] } 5... d5 { [%eval 0.21] } (5... cxd4 { Transposes to a line of the English opening which I have played for both sides }) 6. Qa4 { [%eval -0.32] } { Not sure what that was trying to achieve. } 6... Bd7 { [%eval -0.34] } 7. Qd1 { [%eval -0.72] } { White admits their plan was a mistake but they have lost development and the initiative. } 7... dxc4 $15 { [%eval -0.73] } { This pawn is not easy for white to recover } 8. Bg5?! $19 { [%eval -1.75] } { Inaccuracy. O-O was best. } 8... h6 { [%eval -1.48] } 9. Be3 { [%eval -1.73] } 9... Nd5 { [%eval -1.73] } 10. Bc1 { [%eval -2.08] } 10... cxd4 { [%eval -2.0] } 11. Nxd4 { [%eval -2.41] } 11... Bb4+! { [%eval -2.23] } { That's rather nice, showing white's position to be awkward. } 12. Kf1?! { [%eval -3.08] } { Inaccuracy. Bd2 was best. } 12... Bc5 { [%eval -3.05] } 13. Nxc6 { [%eval -3.0] } 13... Bxc6 { [%eval -3.24] } 14. Nc3 $19 { [%eval -3.15] } 14... Nxc3?! { [%eval -2.21] } { Inaccuracy. O-O was best. } { This initiates some exchanges during which you find a way to win another pawn. } 15. Bxc6+ { [%eval -2.25] } 15... bxc6 { [%eval -2.3] } 16. Qxd8+ { [%eval -2.24] } 16... Rxd8 { [%eval -2.27] } 17. bxc3 { [%eval -2.25] } 17... Rd1+ { [%eval -2.19] } 18. Kg2 { [%eval -2.13] } 18... Rxh1 { [%eval -2.13] } 19. Kxh1 { [%eval -2.07] } 19... Bxf2 { [%eval -2.11] } { I'm not sure your doubled c-pawns are much of an advantage, but you should win this without trouble. } 20. Ba3 $19 { [%eval -2.48] } { If I have the position correct here, both sides now make mistakes. } 20... Kd7?? $14 { [%eval 0.64] } { Blunder. Bb6 was best. } 21. Rd1+? { [%eval -0.76] } { Mistake. Rf1 was best. } 21... Kc7 { [%eval -0.3] } 22. Bd6+?! $17 { [%eval -1.18] } { Inaccuracy. Rf1 was best. } 22... Kb6 { [%eval -0.76] } 23. Rf1? $19 { [%eval -2.39] } { Mistake. Kg2 was best. } 23... Rd8 { [%eval -2.05] } 24. Bb4? { [%eval -4.16] } { Mistake. Be7 was best. } 24... c5 { [%eval -4.05] } 25. Ba3 { [%eval -4.05] } 25... Be3 { [%eval -4.05] } 26. Rxf7 { [%eval -4.67] } 26... Rd2 $19 { [%eval -4.39] } { This is all very grim for white and they finish with a final blunder. } 27. Bc1?! { [%eval -6.44] } { Inaccuracy. Re7 was best. } 27... Rd1+ { [%eval -6.34] } { Tactic: fork
tactic: discovery } 0-1


[Event "WWoE Jamboree 2025: Ethan McGrath Viacheslav Ovcharenko"]
[Site "https://lichess.org/study/khPVCJwn/6RG4rdem"]
[Result "1/2-1/2"]
[Variant "Standard"]
[ECO "A30"]
[Opening "English Opening: Symmetrical Variation"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Ethan McGrath Viacheslav Ovcharenko"]
[UTCDate "2025.01.16"]
[UTCTime "11:09:32"]

1. c4 { [%eval 0.12] } 1... c5 { [%eval 0.19] } 2. g3 { [%eval 0.07] } 2... Nc6 { [%eval 0.13] } 3. Bg2 { [%eval 0.11] } 3... g6 { [%eval 0.14] } 4. Nf3 { [%eval 0.18] } 4... Bg7 { [%eval 0.16] } 5. O-O { [%eval 0.0] } 5... e5 { [%eval 0.21] } 6. d3 { [%eval 0.23] } 6... Nge7 { [%eval 0.24] } 7. Nc3 { [%eval 0.14] } 7... O-O { [%eval 0.15] } 8. e4 $10 { [%eval 0.01] } { This is the Botvinnik system being played by both sides, but I think it works a lot better with the Knight not obstructing the f-pawn, just as you have played it. } 8... d6 { [%eval 0.01] } { With the centre blocked both sides must seek play on the wings my temperament always tells me to go on the king side but queenside play is perfectly legitimate. } 9. a3 { [%eval 0.01] } 9... Rb8 { [%eval 0.06] } (9... f5) 10. Nd5 { [%eval -0.18] } 10... a6 { [%eval -0.03] } 11. Bd2 { [%eval -0.09] } 11... b5 { [%eval 0.0] } 12. b3 { [%eval -0.27] } 12... Bg4 { [%eval -0.25] } 13. h3 $15 { [%eval -0.29] } { Both sides must be wary of swapping off all their active pieces and leaving themselves with a bad Bishop -- although that's exactly what happens! } 13... Bxf3 { [%eval -0.26] } 14. Bxf3 { [%eval -0.35] } 14... Nxd5 { [%eval -0.19] } 15. cxd5 { [%eval -0.26] } 15... Nd4 { [%eval -0.24] } 16. Be3 { [%eval -0.35] } 16... Qf6 { [%eval 0.18] } 17. Bxd4 { [%eval -0.18] } 17... exd4 { [%eval 0.03] } 18. Bg2 { [%eval -0.02] } 18... h5 { [%eval 0.26] } 19. f4 $10 { [%eval -0.15] } 19... Bh6?! $14 { [%eval 0.51] } { Inaccuracy. c4 was best. } 20. Qf3 { [%eval 0.24] } 20... Rfc8 { [%eval 0.22] } 21. Rac1 { [%eval 0.31] } 21... Rc7 { [%eval 0.43] } 22. Rf2 { [%eval 0.13] } 22... Rbc8 { [%eval -0.02] } 23. Bf1 { [%eval 0.05] } 23... h4 { [%eval 0.0] } 24. gxh4 { [%eval 0.0] } 24... Qxh4 { [%eval 0.0] } 25. Qg4 { [%eval 0.01] } 25... Qe7 $10 { [%eval 0.01] } { Stockfish dismisses this position as equal, showing all zeros --however, a couple of inaccurate moves by white give you some chances. } 26. Qf3?! { [%eval -0.61] } { Inaccuracy. Re1 was best. } 26... Kh7 { [%eval -0.28] } 27. Rfc2?! { [%eval -1.03] } { Inaccuracy. Re1 was best. } 27... Rb8 { [%eval -0.76] } 28. Kh1?! { [%eval -1.33] } { Inaccuracy. h4 was best. } 28... f5 { [%eval -1.07] } 29. Re2 $17 { [%eval -1.58] } { If I've got the moves correct there's a strong move for you here. } 29... fxe4? { [%eval -0.34] } { Mistake. Qh4 was best. } (29... Qh4! 30. Rf2 fxe4 31. dxe4 Rf8 $19 { And you win a pawn }) 30. dxe4?? $19 { [%eval -3.46] } { Blunder. Rxe4 was best. } 30... Re8?? $10 { [%eval -0.2] } { Blunder. Rf8 was best. } { There was a lot more of this game which I think ended up in an opposite coloured bishops end game where you were trying hard to find the win. It did looked promising but it's well-known that this type of OCB position is rather drawish. } (30... Rf8! { Is the same idea as before }) 1/2-1/2


[Event "WWoE Jamboree 2025: Benjamin P Hindus -- Suhayl Abdalla"]
[Site "https://lichess.org/study/khPVCJwn/OITVoLiO"]
[Result "1-0"]
[Variant "Standard"]
[ECO "A46"]
[Opening "Indian Defense: London System"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Benjamin P Hindus -- Suhayl Abdalla"]
[UTCDate "2025.01.16"]
[UTCTime "11:19:34"]

{ You didn't do anything much wrong in the opening as such but were unable to stop white creating a strong king side attack }
1. d4 { [%eval 0.17] } 1... Nf6 { [%eval 0.19] } 2. Bf4 { [%eval 0.05] } 2... e6 { [%eval 0.11] } 3. Nf3 { [%eval 0.03] } 3... c5 { [%eval 0.1] } 4. e3 { [%eval 0.07] } 4... Nc6 { [%eval 0.0] } { I'm not fond of the London system: I don't like players playing as white and I don't like facing it as black! White seems to have a terribly stereotyped way of developing, always putting the same pieces on the same squares and then moving pieces over towards the king side to attack the black king. If that's all there was to it, it wouldn't be much of a threat, but in fact it seems very hard for black to come up with a positive plan to interrupt white's process. So it's important to have a definite plan or variation to play against the London system or else White will just roll down the king side... as in this game. } 5. h3?! { [%eval -0.59] } { Inaccuracy. Nc3 was best. } 5... Be7?! { [%eval 0.13] } { Inaccuracy. Qb6 was best. } (5... Qb6) 6. c3 { [%eval 0.12] } 6... O-O { [%eval 0.15] } 7. Nbd2 { [%eval 0.11] } 7... d5 { [%eval 0.08] } 8. Bd3 { [%eval 0.31] } 8... cxd4 { [%eval 0.44] } 9. exd4 $10 { [%eval 0.28] } 9... Re8?! $14 { [%eval 0.83] } { Inaccuracy. Nh5 was best. } 10. O-O { [%eval 0.65] } 10... Nh5 { [%eval 0.57] } 11. Bh2 { [%eval 0.59] } 11... Bd6 { [%eval 0.61] } 12. Ne5 { [%eval 0.69] } 12... Nf6 { [%eval 1.08] } 13. Ndf3 { [%eval 1.11] } 13... Nd7 $16 { [%eval 1.53] } 14. Qe2?! { [%eval 0.63] } { Inaccuracy. Bxh7+ was best. } 14... f5?! { [%eval 1.42] } { Inaccuracy. Nf8 was best. } 15. Kh1?! { [%eval 0.76] } { Inaccuracy. Nxc6 was best. } 15... Ndxe5?! { [%eval 1.49] } { Inaccuracy. Bxe5 was best. } 16. dxe5 { [%eval 1.66] } 16... Bc7 { [%eval 1.5] } 17. Rae1 { [%eval 1.18] } 17... Bd7 { [%eval 1.46] } 18. g4 { [%eval 1.45] } 18... Rf8 $18 { [%eval 1.95] } 19. Rg1?! $16 { [%eval 0.92] } { Inaccuracy. gxf5 was best. } { For the next part of the game I'm sorry I' got into a terrible muddle about the right moves from the score sheet.
I know where most of the pieces were on most turns but I couldn't make a complete clean score out of it. } 19... Rc8?? $18 { [%eval 4.62] } { Blunder. f4 was best. } 20. gxf5 { [%eval 4.09] } 20... exf5 { [%eval 4.87] } 21. e6 { [%eval 4.62] } 21... Be8 $18 { [%eval 5.15] } 22. Bxf5?? $19 { [%eval -3.59] } { Blunder. e7 was best. } 22... g6?? $18 { [%eval 4.75] } { Blunder. Rxf5 was best. } 23. e7 { [%eval 4.84] } 23... Nxe7 { [%eval 4.47] } 24. Bxc8 { [%eval 3.65] } 24... Rxf3? { [%eval 7.45] } { Mistake. Nxc8 was best. } 25. Bg4?! { [%eval 4.99] } { Inaccuracy. Qxf3 was best. } 25... Rf6 { [%eval 6.2] } 26. Be5? { [%eval 3.77] } { Mistake. Qxe7 was best. } 26... Bxe5 { [%eval 3.76] } 27. Qxe5 { [%eval 3.66] } 27... Nc6? { [%eval 6.2] } { Mistake. Kf7 was best. } 28. Qe3? { [%eval 3.13] } { Mistake. Qxe8+ was best. } 28... d4? $18 { [%eval 5.93] } { Mistake. Bf7 was best. } 29. Qd2?? { [%eval 2.27] } { Blunder. Qxe8+ was best. } 29... dxc3?? { [%eval 6.47] } { Blunder. Bf7 was best. } 30. Qxc3?? { [%eval 3.19] } { Blunder. Qxd8 was best. } 30... Qd5+?? { [%eval 6.45] } { Blunder. Rd6 was best. } 31. f3 { [%eval 6.23] } 31... Rxf3 { [%eval 7.12] } 32. Bxf3 { [%eval 7.16] } 32... Qxf3+? { [%eval #8] } { Checkmate is now unavoidable. Qf5 was best. } 33. Kh2?? { [%eval 4.54] } { Lost forced checkmate sequence. Qxf3 was best. } 33... Bd7?? { [%eval #7] } { Checkmate is now unavoidable. Qf4+ was best. } 34. Rg3?? { [%eval 4.45] } { Lost forced checkmate sequence. Qxf3 was best. } 34... Qh5 { [%eval 5.53] } 35. Qc4+ { [%eval 5.0] } 35... Kh8 { [%eval 5.67] } 36. Qf4 { [%eval 4.97] } 36... Qh6?? { [%eval #4] } { Checkmate is now unavoidable. Kg8 was best. } 37. Qf6+?? { [%eval 5.64] } { Lost forced checkmate sequence. Qxh6 was best. } 37... Kg8 { [%eval 5.71] } 38. Reg1 { [%eval 5.72] } 1-0


[Event "WWoE Jamboree 2025: Suhayl Abdalla Henry Witchard"]
[Site "https://lichess.org/study/khPVCJwn/Q4xO5kHm"]
[Result "0-1"]
[Variant "Standard"]
[ECO "E12"]
[Opening "Queen's Indian Defense: Kasparov Variation"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Suhayl Abdalla Henry Witchard"]
[UTCDate "2025.01.16"]
[UTCTime "11:36:30"]

{ You didn't get much out of the opening then black had pressure against your weak queenside structure and soon won the exchange }
1. d4 { [%eval 0.17] } 1... Nf6 { [%eval 0.19] } 2. c4 { [%eval 0.18] } 2... e6 { [%eval 0.11] } 3. Nc3 { [%eval 0.17] } 3... b6?! { [%eval 1.07] } { Inaccuracy. Bb4 was best. } 4. Nf3?! { [%eval 0.17] } { Inaccuracy. e4 was best. } 4... Bb7 { [%eval 0.18] } 5. Bg5 { [%eval 0.0] } { This apparently straightforward system was all the rage few years ago and has a lot of theory associated with it.
Perhaps white doesn't get that much but both players need to know what they're doing. } 5... Bb4 { [%eval 0.0] } 6. Qc2 { [%eval -0.03] } 6... h6 $10 { [%eval 0.0] } 7. Bf4 { [%eval -0.28] } (7. Bh4! { Is the right move, tempting black to weaken their king side.
The main line of theory now goes: } 7... g5 8. Bg3 Ne4 9. e3 Bxc3+ 10. bxc3 d6 11. Bd3 f5 12. d5 Nd7 13. Bxe4 fxe4 14. Qxe4 Qf6 15. O-O O-O-O 16. Qxe6 Qxe6 17. dxe6 Nc5 18. Nd4 Rde8 19. f3 Ba6 20. Nb5 Rxe6 $10 { And this apparently obscure position has been played at the top level a dozen times with white coming out well on top in practical play. }) 7... O-O { [%eval -0.21] } 8. a3 { [%eval -0.39] } 8... Bxc3+ { [%eval -0.37] } 9. Qxc3 { [%eval -0.29] } 9... Ne4 { [%eval -0.2] } 10. Qd3 { [%eval -0.4] } 10... a5?! { [%eval 0.27] } { Inaccuracy. c5 was best. } 11. g3 { [%eval -0.19] } 11... d5 { [%eval -0.12] } 12. Bg2 { [%eval -0.03] } 12... Nd7 $10 { [%eval 0.0] } 13. O-O { [%eval -0.11] } 13... Ba6 { [%eval -0.18] } 14. b3 { [%eval -0.41] } 14... a4 $15 { [%eval -0.47] } { Black is doing a good job of softening up the white structure but there's nothing too much to worry about yet.
White's next move though put the game in great danger. } 15. Qb1? $19 { [%eval -2.09] } { Mistake. Nd2 was best. } 15... axb3 { [%eval -1.95] } 16. cxd5?! { [%eval -3.23] } { Inaccuracy. Qxb3 was best. } 16... Nc3 { [%eval -3.22] } 17. Qxb3 { [%eval -3.2] } 17... Nxe2+ { [%eval -3.28] } 18. Kh1 { [%eval -3.33] } 18... Nxf4 { [%eval -3.14] } 19. gxf4 { [%eval -3.1] } 19... Bxf1 { [%eval -3.16] } 20. Rxf1 { [%eval -3.18] } 20... exd5 { [%eval -3.37] } { Black has the exchange and the pawn and stands very well.
It's not easy for white to create counterplay. } 21. Ne5 { [%eval -3.42] } 21... Nf6 { [%eval -2.94] } 22. Rg1 { [%eval -2.88] } 22... Qd6 { [%eval -2.96] } 23. a4 { [%eval -2.84] } 23... Ne4?! { [%eval -2.08] } { Inaccuracy. Rfe8 was best. } 24. Bxe4 { [%eval -2.09] } 24... dxe4 { [%eval -1.71] } 25. Qg3 { [%eval -1.89] } 25... g6 { [%eval -1.78] } 26. f5 { [%eval -2.25] } 26... g5 { [%eval -2.21] } 27. h4 { [%eval -2.79] } 27... f6 { [%eval -2.88] } 28. hxg5 { [%eval -2.96] } 28... hxg5 { [%eval -3.03] } 29. Qb3+?! { [%eval -4.3] } { Inaccuracy. Kg2 was best. } 29... Kg7 { [%eval -3.99] } 30. Ng6? { [%eval -7.65] } { Mistake. Qg3 was best. } 30... Rfd8?! { [%eval -4.6] } { Inaccuracy. Rh8+ was best. } 31. Qc4 { [%eval -4.59] } 31... e3 { [%eval -4.28] } { White has had some success in worrying black but in fact it's the white king that is the weaker. } 32. f3?? { [%eval #-4] } { Checkmate is now unavoidable. fxe3 was best. } 32... Rh8+ { [%eval #-3] } 33. Kg2 { [%eval #-2] } 33... Qh2+ { [%eval #-1] } 34. Kf1 { [%eval #-1] } 34... Qf2# 0-1


[Event "WWoE Jamboree 2025: Suhayl Abdalla nn"]
[Site "https://lichess.org/study/khPVCJwn/DozmhK6x"]
[Result "0-1"]
[Variant "Standard"]
[ECO "A85"]
[Opening "Dutch Defense: Queen's Knight Variation"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Suhayl Abdalla nn"]
[UTCDate "2025.01.16"]
[UTCTime "11:41:57"]

{ You fell for an ancient trap after which there wasn't much you could do. }
1. d4 { [%eval 0.17] } 1... f5 { [%eval 0.47] } 2. c4 { [%eval 0.47] } 2... Nf6 { [%eval 0.42] } 3. Nc3 { [%eval 0.38] } 3... e6 { [%eval 0.52] } 4. Nf3 { [%eval 0.24] } 4... Bb4 { [%eval 0.35] } 5. Bg5 { [%eval -0.09] } { I think this is a bit too straightforward against such an active opening as the Dutch Defence. I know Capablanca had a famous win with it against Tartakower, but this system doesn't really ask any hard questions of black. } 5... Bxc3+ { [%eval 0.0] } 6. bxc3 { [%eval 0.0] } 6... h6 $10 { [%eval 0.0] } 7. Bh4?! { [%eval -0.78] } { Inaccuracy. Bxf6 was best. } { This is a kingside version of the famous Noah's ark trap } 7... g5 $17 { [%eval -0.88] } 8. Nxg5? $19 { [%eval -2.14] } { Mistake. Bg3 was best. } { Oddly, Stockfish thinks that you should try and get only one pawn for the piece and not two. } (8. Bg3 f4 9. e4 fxg3 10. hxg3 $17 { At least in this position you have a big strong centre }) 8... hxg5 { [%eval -2.14] } 9. Bxg5 $19 { [%eval -2.08] } 9... Qe7 $15 { [%eval -2.2] } { You're a piece down with not much to do.
you might be able to run the h-Pawn but the endgame is a long way off. } 10. d5?! $19 { [%eval -3.55] } { Inaccuracy. h4 was best. } 10... Qg7 { [%eval -3.55] } 11. Bxf6 { [%eval -3.79] } 11... Qxf6 { [%eval -3.83] } 12. Qd4 { [%eval -4.5] } 12... e5 { [%eval -4.4] } 13. Qd3 { [%eval -4.55] } 13... Na6 { [%eval -4.58] } 14. f3 { [%eval -5.15] } 14... Nc5 { [%eval -4.9] } 15. Qd2 { [%eval -4.97] } 15... d6 { [%eval -5.14] } 16. e3 { [%eval -5.4] } 16... Bd7 { [%eval -5.25] } 17. Be2 { [%eval -5.15] } 17... Qg6 { [%eval -4.76] } 18. Kf2 { [%eval -5.29] } 18... Ke7 { [%eval -5.03] } 19. Rag1 { [%eval -4.88] } 19... Rag8 { [%eval -5.01] } 20. Qc2 { [%eval -5.43] } 20... Rxh2! $19 { [%eval -5.54] } { Tactic: fork
with this breakthrough black sews up the win } 21. Bf1?! { [%eval -8.26] } { Inaccuracy. Rxh2 was best. } 21... b5?! { [%eval -5.98] } { Inaccuracy. Qg3+ was best. } 22. Ke2?! { [%eval -8.39] } { Inaccuracy. Ke1 was best. } 22... Qh6 { [%eval -8.32] } 23. Rxh2 { [%eval -8.43] } 23... Qxh2 { [%eval -8.43] } 24. Kf2 { [%eval -8.68] } 24... Qg3+ { [%eval -9.22] } 25. Ke2 { [%eval -9.14] } 25... bxc4 { [%eval -8.79] } 26. Kd1 { [%eval -11.4] } 26... Ba4 { [%eval -9.91] } 0-1


[Event "WWoE Jamboree 2025: Oliver Sleight Ayush Menon"]
[Site "https://lichess.org/study/khPVCJwn/yTSRt4EM"]
[Result "0-1"]
[Variant "Standard"]
[ECO "B20"]
[Opening "Sicilian Defense: Mengarini Variation"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Oliver Sleight Ayush Menon"]
[UTCDate "2025.01.16"]
[UTCTime "11:49:48"]

1. e4 { [%eval 0.18] } 1... c5 { [%eval 0.25] } 2. a3 $10 { [%eval -0.13] } { White has tried everything else against the Sicilian, why not this? } 2... b6 { [%eval 0.3] } 3. Bc4 { [%eval -0.09] } 3... Bb7 { [%eval -0.09] } 4. d3 { [%eval -0.12] } 4... e6 { [%eval -0.11] } 5. Nc3 { [%eval -0.22] } 5... d5 { [%eval 0.0] } 6. Ba2?! $15 { [%eval -0.68] } { Inaccuracy. exd5 was best. } 6... dxe4 { [%eval -0.66] } 7. Nxe4 { [%eval -0.6] } 7... Bxe4?! $10 { [%eval 0.09] } { Inaccuracy. Nf6 was best. } 8. dxe4 { [%eval 0.01] } 8... Qxd1+ { [%eval 0.02] } 9. Kxd1 { [%eval 0.0] } 9... Nc6 $10 { [%eval 0.13] } { I'm not sure what you were hoping to get out of the opening but I trust it was better than this. } 10. f3 { [%eval -0.11] } 10... Bd6 { [%eval 0.14] } 11. Ne2 { [%eval -0.15] } 11... O-O-O { [%eval -0.18] } 12. Ke1 { [%eval -0.2] } 12... Nf6 { [%eval -0.19] } 13. Be3 { [%eval -0.18] } 13... h5 $10 { [%eval 0.0] } { This is still about equal. However, for the next part of the game, you swap off all your pieces apart from your light squared Bishop, and then you put all your pawns on light coloured squares. This leaves your Bishop acting as a tall pawn and not able to defend the position against the mobile knight acting on the dark squares. } 14. Bf4?! { [%eval -0.77] } { Inaccuracy. Nf4 was best. } 14... Rd7 { [%eval -0.24] } 15. Rd1 { [%eval -0.34] } 15... Rhd8 { [%eval -0.2] } 16. Bxd6 { [%eval -0.13] } 16... Rxd6 { [%eval -0.12] } 17. Rxd6 { [%eval -0.13] } 17... Rxd6 { [%eval -0.17] } 18. Bb1 { [%eval -0.6] } 18... Rd7 $10 { [%eval -0.07] } 19. c4? $17 { [%eval -1.43] } { Mistake. h4 was best. } 19... Nd4?! $15 { [%eval -0.34] } { Inaccuracy. h4 was best. } 20. Nxd4 $15 { [%eval -0.63] } 20... Rxd4 { [%eval -0.58] } 21. b3 { [%eval -0.59] } { Black has an advantage but doesn't make the most of it } 21... g5?! $10 { [%eval 0.0] } { Inaccuracy. h4 was best. } 22. Ke2?! $15 { [%eval -0.57] } { Inaccuracy. h4 was best. } 22... e5?! $10 { [%eval 0.0] } { Inaccuracy. h4 was best. } 23. Rd1 { [%eval -0.32] } 23... Kc7 { [%eval -0.25] } 24. Rxd4 { [%eval -0.26] } 24... cxd4 { [%eval -0.26] } 25. g3 { [%eval -0.28] } 25... Kd6 { [%eval -0.3] } 26. b4 { [%eval -0.32] } 26... g4 { [%eval 0.0] } 27. f4 { [%eval 0.0] } 27... Nd7 { [%eval 0.0] } 28. Ba2 $15 { [%eval -0.35] } { Black is still a little better but the position is at risk of seizing up. There's no way through for the black king and the black knight lacks scope. } 0-1


[Event "WWoE Jamboree 2025: Oliver Sleight Edward Ames"]
[Site "https://lichess.org/study/khPVCJwn/VFJvLWK2"]
[Result "0-1"]
[Variant "Standard"]
[ECO "C00"]
[Opening "French Defense: Normal Variation"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Oliver Sleight Edward Ames"]
[UTCDate "2025.01.16"]
[UTCTime "11:54:28"]

{ When you meet an unfamiliar opening it can feel as though you were never in the game... You didn't do anything terribly wrong, but got the wrong end of the stick and you were under a lot of pressure when you made your important oversight. }
1. e4 { [%eval 0.18] } 1... e6 { [%eval 0.28] } (1... b6!? 2. d4 Bb7 3. Bd3 f5? 4. exf5 Bxg2 5. Qh5+ g6 6. fxg6 Nf6 (6... Bg7 7. gxh7+ Kf8 8. Nf3! Bxh1 (8... Nf6 9. Qg6 Bxf3 10. Rg1 Rxh7 11. Qg3 Be4 12. Bxe4 Nxe4 13. Qf3+! $18) 9. Ne5 $18) 7. gxh7+ Nxh5 8. Bg6# { Greco 1620 }) 2. d4 { [%eval 0.28] } 2... b6 { [%eval 0.7] } 3. c4 $14 { [%eval 0.45] } { Nothing wrong with this, but it's probably pushing you towards types of position that you don't play so often, being an e-pawn player. } (3. Bd3 { We discussed black's curious opening after the game and decided that this move was probably a better and safer approach, particularly for king-side opening player. } 3... Bb7 4. Nf3 Nf6 5. Qe2!? $14 (5. e5! $16)) 3... Bb7 { [%eval 0.56] } 4. Nc3 { [%eval 0.27] } 4... Bb4 { [%eval 0.32] } 5. Bd3 { [%eval 0.26] } 5... f5 { [%eval 0.29] } { I've often played this as Black; White's centre is under pressure. } 6. d5?! $10 { [%eval 0.0] } { Very natural but probably a little too loose } (6. f3 $10 { looks OK } 6... Nc6 7. Be3 Qh4+ 8. g3 Bxc3+ 9. bxc3 Qh5 $14) (6. Qe2 $10 { Is very sensible }) (6. Qh5+ g6 7. Qe2 $10 { was the big main line when I was a boy but it's not clear that forcing g6 is in White's favour. }) (6. Ne2 $14 { I've never seen this move played or analysed in the books, but Stockfish likes it. } 6... fxe4 7. Bc2) 6... fxe4 { [%eval -0.02] } 7. Bxe4 { [%eval -0.13] } 7... Nf6 $10 { [%eval 0.0] } 8. Bg5?! $15 { [%eval -0.74] } { Inaccuracy. Bf3 was best. } (8. Bf3 exd5 9. cxd5 Qe7+ 10. Ne2 Bxc3+ 11. bxc3 Qc5 12. c4 Qxc4) 8... Bxc3+ { [%eval -0.67] } (8... Nxe4 { is an amusing queen sacrifice which I think has been tried but actually is not adequate. } 9. Bxd8 Nxc3 10. bxc3 Bxc3+ 11. Kf1 Bxa1 12. Qxa1 Kxd8) 9. bxc3 { [%eval -0.68] } 9... O-O $15 { [%eval -0.6] } 10. Qd3?! $17 { [%eval -1.69] } { Inaccuracy. Bc2 was best. } (10. Bc2) 10... h6 { [%eval -1.71] } 11. Bh4 $19 { [%eval -1.77] } 11... g5?! $17 { [%eval -0.96] } { Inaccuracy. Na6 was best. } (11... Na6 12. Bg6) 12. Bg3 { [%eval -0.82] } 12... Nxe4 { [%eval -0.73] } 13. Qxe4 { [%eval -0.8] } 13... Qf6 { [%eval -0.78] } 14. Ne2 { [%eval -0.77] } 14... Na6 { [%eval -0.65] } 15. O-O { [%eval -1.18] } 15... exd5 { [%eval -1.43] } 16. cxd5 { [%eval -1.29] } 16... Rae8 $17 { [%eval -1.27] } { Black has a very nice position with lots of targets to aim at and better development. } 17. Qc4?! $19 { [%eval -2.41] } { Inaccuracy. Qc2 was best. } { This sets you up for a skewer. } (17. Qc2) 17... Nc5 { [%eval -2.36] } 18. Bxc7?? { [%eval -4.96] } { Blunder. d6+ was best. } (18. d6+ Kh7 19. Rfe1 h5 20. Nd4 h4 21. Rxe8 Rxe8 22. dxc7 hxg3 23. fxg3 Ba6) 18... Ba6 { [%eval -4.75] } { Tactic: skewer } 19. Qd4 { [%eval -4.99] } 19... Bxe2 $19 { [%eval -4.82] } { Now you're a whole piece down and, while Stockfish has a couple of nitpicks about your later moves, I don't really think there was anything more you could have done against accurate play by your opponent. } 20. Rfe1 { [%eval -5.21] } 20... Qxd4 { [%eval -4.92] } 21. cxd4 { [%eval -5.05] } 21... Nb7?! { [%eval -4.03] } { Inaccuracy. Nd3 was best. } 22. Rac1 { [%eval -4.35] } 22... Bh5 { [%eval -3.97] } 23. Rxe8 { [%eval -4.03] } 23... Rxe8 { [%eval -3.95] } 24. Be5 { [%eval -4.08] } 24... d6 { [%eval -3.84] } 25. Rc7?! { [%eval -5.51] } { Inaccuracy. Bg3 was best. } 25... dxe5 { [%eval -5.53] } 26. Rxb7?! { [%eval -7.86] } { Inaccuracy. dxe5 was best. } 26... exd4 { [%eval -7.62] } 27. f3 { [%eval -8.69] } 27... Rd8?! { [%eval -5.29] } { Inaccuracy. d3 was best. } 28. Rxa7 { [%eval -6.67] } 28... Rxd5 { [%eval -6.4] } 29. Kf2 { [%eval -6.38] } 0-1


[Event "WWoE Jamboree 2025: Jun Li Yeap - Yaroslav Sharhorodski"]
[Site "https://lichess.org/study/khPVCJwn/7l6Vtqxa"]
[Result "0-1"]
[Variant "Standard"]
[ECO "C24"]
[Opening "Bishop's Opening: Vienna Hybrid"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Jun Li Yeap - Yaroslav Sharhorodski"]
[UTCDate "2025.01.16"]
[UTCTime "11:59:23"]

{ This was a real shame! I thought you played the opening with a lot of style and vigour, got a really nice position and I was convinced you were going to win... The advanced passed pawn turned out to be a lot weaker than you must have hoped and, sadly, once it disappeared black was in the driving seat. }
1. e4 { [%eval 0.18] } 1... e5 { [%eval 0.21] } 2. Nc3 { [%eval 0.06] } 2... Nc6 { [%eval 0.07] } 3. Bc4 { [%eval 0.07] } 3... Nf6 { [%eval 0.07] } 4. d3 { [%eval 0.03] } 4... Bc5 { [%eval 0.09] } (4... Bb4 { must be the best way to slow down white's plans.
John Emms wrote a couple of books a while ago recommending for white: } 5. Ne2) 5. f4 { [%eval -0.08] } 5... d6 { [%eval 0.0] } 6. f5 { [%eval 0.0] } (6. Nf3 { Is the right move, I have always thought, but you make this one look good }) 6... g6?! $14 { [%eval 0.49] } 7. Bg5 { [%eval 0.16] } 7... h6 { [%eval 0.33] } { All these Pawn moves are unlikely to help black } 8. Bxf6 { [%eval 0.35] } 8... Qxf6 { [%eval 0.31] } 9. Nd5 { [%eval 0.59] } 9... Qd8 { [%eval 0.71] } 10. fxg6 { [%eval 0.81] } 10... fxg6 { [%eval 0.82] } 11. Nf3 $16 { [%eval 0.86] } 11... Nb4 { [%eval 1.28] } 12. Nxb4 { [%eval 1.03] } 12... Bxb4+ { [%eval 0.98] } 13. c3 { [%eval 1.05] } 13... Bc5 $16 { [%eval 1.05] } { White has a very nice position } 14. Qb3 { [%eval 0.75] } (14. d4! $16) 14... Rf8 { [%eval 1.11] } 15. O-O-O { [%eval 0.84] } 15... c6 { [%eval 1.24] } 16. d4 { [%eval 1.11] } 16... exd4 { [%eval 1.09] } 17. cxd4 { [%eval 1.12] } 17... Bb6 $16 { [%eval 1.17] } { This is all still very nice, but now you take a moment to play unnecessary pawn move of your own, and your advantage and your initiative disappear. } 18. h3?! $10 { [%eval 0.33] } { Inaccuracy. d5 was best. } { So this is now about equal } 18... Qf6?! $16 { [%eval 1.17] } { Inaccuracy. Qe7 was best. } { This hands the initiative back to white } 19. e5?! $14 { [%eval 0.45] } { Inaccuracy. Rhf1 was best. } { This is a natural way to try and gain the initiative but black has a couple of checks that allow them to get back to equality. } 19... Qf4+ { [%eval 0.3] } 20. Kb1 { [%eval 0.29] } 20... Bf5+ { [%eval 0.32] } 21. Ka1 $14 { [%eval 0.29] } 21... O-O-O?! $16 { [%eval 0.94] } { Inaccuracy. d5 was best. } (21... d5 22. Bd3 O-O-O $10) 22. Be6+?! $10 { [%eval 0.0] } { Inaccuracy. e6 was best. } 22... Kb8 { [%eval 0.03] } 23. Bxf5 { [%eval 0.05] } 23... Qxf5 { [%eval 0.0] } 24. Rhe1 { [%eval -0.02] } 24... Rfe8 { [%eval 0.03] } 25. e6 { [%eval 0.0] } 25... d5 $10 { [%eval 0.01] } { The passed pawn looks promising but turns out to be weak. } 26. Re5?! { [%eval -0.63] } { Inaccuracy. e7 was best. } 26... Qf6 { [%eval -0.64] } 27. Rde1 { [%eval -0.67] } 27... Ba5 { [%eval -0.47] } 28. R1e2 { [%eval -0.58] } 28... Bc7?! { [%eval 0.19] } { Inaccuracy. Re7 was best. } 29. e7 { [%eval 0.42] } 29... Rd7 { [%eval 0.4] } 30. Re6 { [%eval 0.32] } 30... Qf7 { [%eval 0.41] } 31. Qb4 { [%eval 0.33] } 31... Qf4 { [%eval 0.58] } 32. a3 $14 { [%eval 0.59] } { After these manoeuvres, white has regained the advantage, but the next move is a mistake. } 32... Bd6?! $18 { [%eval 1.41] } { Inaccuracy. Rd6 was best. } 33. Qb3?? $15 { [%eval -0.3] } { Blunder. Qe1 was best. } (33. Qe1 Qf7 34. Ne5 Bxe5 35. R2xe5 { And while it's not obvious what your best way forward is here, it is clear that you've got the type of position you want. }) 33... Rdxe7 { [%eval -0.37] } 34. Rxe7 { [%eval -0.38] } 34... Rxe7 { [%eval -0.48] } 35. Rxe7 { [%eval -0.54] } 35... Bxe7 { [%eval -0.65] } { Now your pawn has disappeared, it's obviously tricky and the most important thing is to maximise your activity to gain a draw. } 36. Qc2?! { [%eval -1.46] } { Inaccuracy. Ne5 was best. } 36... Qe4 { [%eval -1.35] } 37. Qf2 { [%eval -1.65] } 37... Bd6 { [%eval -1.54] } 38. Qd2 { [%eval -1.73] } 38... g5 { [%eval -1.78] } 39. Ka2 $19 { [%eval -1.71] } 0-1


[Event "WWoE Jamboree 2025: Dev Mistry - Jun Li Yeap"]
[Site "https://lichess.org/study/khPVCJwn/YYruXWCx"]
[Result "0-1"]
[Variant "Standard"]
[ECO "B12"]
[Opening "Caro-Kann Defense: Advance Variation, Van der Wiel Attack"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Dev Mistry - Jun Li Yeap"]
[UTCDate "2025.01.16"]
[UTCTime "12:04:24"]

{ You equalised nicely against white's sensible-looking but unthreatening opening, and when they made a mistake you pounced. }
1. e4 { [%eval 0.18] } 1... c6 { [%eval 0.23] } 2. d4 { [%eval 0.25] } 2... d5 { [%eval 0.24] } 3. e5 { [%eval 0.33] } 3... Bf5 { [%eval 0.22] } 4. Nc3 { [%eval 0.0] } 4... e6 { [%eval 0.0] } 5. Nf3 { [%eval 0.0] } 5... c5 { [%eval 0.25] } 6. Be3 { [%eval 0.11] } 6... cxd4?! { [%eval 0.8] } { Inaccuracy. c4 was best. } 7. Bxd4? { [%eval -0.61] } { Mistake. Nxd4 was best. } 7... Nc6 { [%eval -0.63] } 8. Bb5 { [%eval -0.86] } 8... Bb4?! { [%eval 0.04] } { Inaccuracy. Ne7 was best. } 9. Bxc6+ { [%eval -0.28] } 9... bxc6 { [%eval -0.3] } 10. a3 { [%eval -0.25] } 10... Ba5 { [%eval 0.16] } 11. O-O { [%eval 0.08] } 11... Ne7 { [%eval 0.21] } 12. Re1 { [%eval -0.31] } 12... Qc7 { [%eval 0.12] } 13. b4 { [%eval 0.18] } 13... Bb6 $10 { [%eval 0.11] } { Black's nearly completed development and has a comfortably equal position; however, white now overlooks something important. } 14. b5?? $19 { [%eval -3.73] } { Blunder. h3 was best. } 14... c5! { [%eval -3.61] } 15. Be3 { [%eval -3.72] } 15... d4 { [%eval -3.71] } { Tactic: fork } 16. Bxd4 { [%eval -4.24] } 16... cxd4 { [%eval -4.22] } 17. Nxd4 { [%eval -5.09] } 17... Qxc3 { [%eval -5.25] } 18. Ne2 { [%eval -5.7] } 18... Qxc2 { [%eval -5.24] } 19. Qxc2 { [%eval -5.29] } 19... Bxc2 $19 { [%eval -5.2] } { The dust has cleared a little bit and black is two pieces ahead; the rest of the game wasn't strictly necessary. } 20. Rac1 { [%eval -5.49] } 20... Bf5 { [%eval -5.44] } 21. Red1 { [%eval -5.45] } 21... Bg4 { [%eval -5.39] } 22. Rd2 { [%eval -5.4] } 22... Bxe2 { [%eval -5.53] } 23. Rxe2 { [%eval -5.5] } 23... O-O { [%eval -5.47] } 24. Rc3 { [%eval -5.84] } 24... Rac8 { [%eval -5.83] } 25. Rxc8 { [%eval -5.88] } 25... Rxc8 { [%eval -5.93] } 26. g3 { [%eval -5.79] } 26... h6 { [%eval -5.63] } 27. h4 { [%eval -5.67] } 27... Rc3 { [%eval -5.71] } 28. a4 { [%eval -6.51] } 28... Rxg3+ { [%eval -6.43] } 29. Kh2 { [%eval -6.42] } 29... Ra3 { [%eval -6.25] } 0-1


[Event "WWoE Jamboree 2025: Jun Li Yeap - Adnay Misra"]
[Site "https://lichess.org/study/khPVCJwn/YnthSRbY"]
[Result "0-1"]
[Variant "Standard"]
[ECO "C01"]
[Opening "French Defense: Exchange Variation"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Jun Li Yeap - Adnay Misra"]
[UTCDate "2025.01.16"]
[UTCTime "12:07:57"]

{ I think you went wrong only at the end of this game; the earlier part was perfectly OK although it didn't yield you much of an advantage. }
1. e4 { [%eval 0.18] } 1... e6 { [%eval 0.28] } 2. d4 { [%eval 0.28] } 2... d5 { [%eval 0.33] } 3. exd5 { [%eval 0.22] } 3... exd5 { [%eval 0.14] } { I don't normally approve of white playing the exchange variation against the French defence but } 4. Nf3 { [%eval 0.09] } 4... Nf6 { [%eval 0.17] } 5. c4!? { [%eval -0.08] } { This approach certainly asks some questions of black and has been played by Kasparov. } 5... Bd6 { [%eval 0.15] } 6. Nc3 { [%eval 0.05] } 6... c6 { [%eval 0.29] } 7. Be2 { [%eval 0.19] } (7. Bd3 { Might be a little more forcing }) 7... O-O { [%eval 0.13] } 8. O-O { [%eval 0.18] } 8... Bg4 { [%eval 0.32] } 9. cxd5 { [%eval 0.2] } 9... cxd5 { [%eval 0.54] } 10. Bg5 { [%eval 0.59] } 10... Be7 $14 { [%eval 0.72] } { In this apparently quiet position, white's got an extra piece in development and it's white's go, so I think you have got a small to medium sized advantage here. } 11. Qb3 { [%eval 0.54] } 11... Nc6 { [%eval 0.6] } 12. Qxb7 { [%eval 0.7] } 12... Bxf3 { [%eval 0.68] } 13. Qxc6 { [%eval 0.74] } 13... Rc8 { [%eval 0.78] } 14. Qa6 { [%eval 0.85] } 14... Bxe2 { [%eval 0.78] } 15. Qxe2 $16 { [%eval 0.76] } { Well you've got your extra pawn; can you win with it?
Black now starts to play very vigorously, as they should, and eventually gets enough counterplay to win the pawn back. } 15... Re8 { [%eval 0.75] } 16. Qd3 { [%eval 0.66] } 16... Ne4 { [%eval 0.62] } 17. Bxe7 { [%eval 0.62] } 17... Rxe7 { [%eval 0.59] } 18. Rfe1 { [%eval 0.37] } 18... Nxc3 { [%eval 0.38] } 19. Rxe7 { [%eval 0.02] } 19... Qxe7 { [%eval 0.0] } 20. bxc3 { [%eval 0.0] } 20... Qa3 { [%eval 0.0] } 21. Rb1 { [%eval 0.0] } 21... Qxa2 { [%eval 0.0] } 22. g3 { [%eval 0.0] } 22... a6 { [%eval 0.22] } 23. Rc1 { [%eval -0.1] } 23... Qb2 { [%eval 0.25] } 24. Qc2 { [%eval -0.16] } 24... Qb5 { [%eval 0.03] } 25. Rb1 { [%eval 0.03] } 25... Qc4 { [%eval 0.0] } 26. Rc1 { [%eval -0.21] } 26... a5 $10 { [%eval -0.15] } 27. f3? $17 { [%eval -1.38] } { Mistake. Ra1 was best. } 27... a4 { [%eval -1.38] } { That was a shame: your last move was a sin of omission as well as commission. The commission part is: when you're defending, don't make any more weaknesses or make your position any more loose than you need to; the omission was that you can stop the enemy pawn in its tracks with a move like Ra1, when although black's got an extra Pawn I think it's about equal. } 0-1


[Event "WWoE Jamboree 2025: Name missing?"]
[Site "https://lichess.org/study/khPVCJwn/MBJjjERy"]
[Result "*"]
[Variant "Standard"]
[ECO "?"]
[Opening "?"]
[Annotator "https://lichess.org/@/DrDaveExeter"]
[StudyName "WWoE Jamboree 2025"]
[ChapterName "Name missing?"]
[UTCDate "2025.01.19"]
[UTCTime "21:49:42"]

{ I didn't arrive back with any of your games [sorry if I overlooked any score sheets] but if you'd like me to look at it anything please send some scores along. }
 *


