[Event "2024 John W. Collins Postal Quads Section 24C02"] [Date "2024.??.??"] [White "Leisner, Jon"] [Black "Hart, Bert"] [Result "1-0"] [Annotator "Tactical Analysis 7.0"] [GameId "2206875886678046"] [Variant "Standard"] [ECO "B00"] [Opening "Nimzowitsch Defense: Williams Variation"] [StudyName "Check is in the Mail - September 2025"] [ChapterName "Game 1"] [ChapterURL "https://lichess.org/study/Jl5sWU28/BsrzWLbG"] [Orientation "white"] 1. e4 Nc6 2. Nf3 d6 3. d4 Nf6 4. Nc3 g6 5. d5 Nb8 6. h3 { B00: Queen's Fianchetto Defence, Nimzowitsch Defence. } 6... Bg7 7. Bc4 O-O 8. O-O { White is slightly better. } 8... e5 9. dxe6 Bxe6 10. Bxe6 fxe6 11. e5 dxe5 12. Qe2 (12. Nxe5?! Nbd7 $16) 12... e4 $146 { Predecessor: } (12... Nc6 13. Bg5 Nd4 14. Nxd4 exd4 15. Rad1 Qd7 16. Bxf6 Rxf6 17. Qc4 Rf5 18. Rfe1 b5 { 1-0 Sevian,S (2684)-Ibarra Jerez,J (2570) Chess.com Rapid Wk19 Swiss Chess.com INT 2022 (1) }) 13. Nxe4 Nxe4 14. Qxe4 Qd5 15. Re1 $36 { White is really pushing. } 15... Qxe4 16. Rxe4 Re8 17. c3 Nd7 18. Bf4 Nf6 (18... Nc5 $14 { is superior. } 19. Re3 c6) 19. Re2 $16 { White is more active. } 19... Re7 (19... Nd5 $16 20. Bg3 Re7) 20. Rae1 $18 Rd8 (20... Rae8 $16 21. Be5 Nd5) 21. Rxe6 Rxe6 22. Rxe6 c6 (22... Rd1+ { might work better. } 23. Kh2 Rf1) 23. Rd6 (23. Be5 $18 Re8 24. Rxe8+ (24. Rxf6 Rxe5 25. Nxe5 Bxf6 $16) 24... Nxe8 25. Kf1 Bxe5 26. Nxe5) 23... Rxd6 $16 24. Bxd6 { Endgame KBN-KBN. White is a pawn up. } 24... Ne4 { Prevents Bd6-c5. } 25. Bf4 Kf7 (25... Nc5 $16) 26. Kf1 $18 { Black must now prevent Bf4-e3. } 26... Ke6 27. Bd2 (27. Ke2 $18) 27... Nxd2+? { This costs Black the game. } (27... Kd5 $16) 28. Nxd2 $16 { KB-KN. White is a pawn up. } 28... Kd5 29. Ke2 a5 (29... g5 30. Kf3 b5) 30. Kd3 $18 a4 31. b3 axb3 32. axb3 b5 (32... g5 33. g3 Bf6) 33. Nf1 Ke5 34. Ne3 Kf4 35. Nc2 c5 { Repels Nc2-d4 } (35... Ke5 36. c4 bxc4+ 37. Kxc4 Bf6) 36. Na3 { Weighted Error Value: White=0.31/Black=0.68 Loses game: --- Black=1 Missed win: White=1 --- Mistake: White=1 Black=9 Inaccurate: --- Black=1 OK: White=8 Black=12 Best: --- Black=1 } 1-0