CohenChessClub.com

[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/PeCTdEIv"] [Date "2026.06.21"] [White "Sydney"] [Black "Matthew12"] [Result "0-1"] [UTCDate "2026.06.21"] [UTCTime "17:05:38"] [WhiteElo "1058"] [BlackElo "1431"] [WhiteRatingDiff "-4"] [BlackRatingDiff "+3"] [BlackTitle "GM⍩"] [Variant "Standard"] [TimeControl "420+2"] [ECO "B00"] [Opening "Nimzowitsch Defense: El Columpio Defense"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. Nf3 Nc6 2. e4 Nf6?! { (0.33 → 1.09) Inaccuracy. e5 was best. } (2... e5) 3. e5 Ng4?! { (1.22 → 2.06) Inaccuracy. Ng8 was best. } { B00 Nimzowitsch Defense: El Columpio Defense } (3... Ng8) 4. h3?? { (2.06 → -0.37) Blunder. d4 was best. } (4. d4 e6 5. Nc3 d5 6. Bd3 Nb4 7. h3 Nh6 8. Bxh6 gxh6 9. O-O Bd7 10. Ne2 Qe7) 4... Ngxe5 5. Nxe5 Nxe5 6. Qe2? { (-0.53 → -1.90) Mistake. d4 was best. } (6. d4 Ng6) 6... d6?! { (-1.90 → -0.97) Inaccuracy. Nc6 was best. } (6... Nc6 7. c3 d5 8. d4 e6 9. Be3 Bd6 10. Nd2 O-O 11. Nf3 f6 12. O-O-O Ne7 13. Qc2) 7. g3? { (-0.97 → -2.52) Mistake. d4 was best. } (7. d4) 7... Bf5?! { (-2.52 → -1.50) Inaccuracy. c5 was best. } (7... c5) 8. f4?! { (-1.50 → -2.08) Inaccuracy. d4 was best. } (8. d4 Nc6) 8... Ng6?! { (-2.08 → -1.13) Inaccuracy. Nc6 was best. } (8... Nc6) 9. h4 Bxc2?? { (-1.66 → 2.64) Blunder. h5 was best. } (9... h5 10. Qb5+) 10. Nc3 e5?? { (2.06 → 4.39) Blunder. Bf5 was best. } (10... Bf5 11. h5 Nxf4 12. gxf4 Qd7 13. d4 d5 14. Be3 g6 15. Qd2 gxh5 16. Rxh5 e6 17. Bd3) 11. f5?? { (4.39 → -4.23) Blunder. d3 was best. } (11. d3 d5) 11... Bxf5 12. g4?! { (-4.23 → -6.65) Inaccuracy. Bg2 was best. } (12. Bg2 c6) 12... Bc8?! { (-6.65 → -4.83) Inaccuracy. Be6 was best. } (12... Be6) 13. Qh2?! { (-4.83 → -8.43) Inaccuracy. d4 was best. } (13. d4 Be7) 13... Bxg4 14. Bb5+ c6 15. Be2 Bxe2 16. Qxe2 Nxh4 17. Rxh4 Qxh4+ 18. Kd1 O-O-O 19. b4 Re8 20. Ne4 Qh1+ 21. Kc2 Re6 22. Bb2 Qh4 23. Nf2 Rf6 24. b5 Rxf2 25. Qd3 cxb5 26. Qxb5 Qe4+ 27. Qd3 Qxd3+ 28. Kxd3 Rf3+ 29. Ke2 Rf4 30. Rc1+ Kb8 31. Rc3 Be7 32. d3 Bh4 33. Bc1 Rf2+ 34. Ke1 Rc8 35. Bb2?! { (-14.24 → Mate in 4) Checkmate is now unavoidable. Rxc8+ was best. } (35. Rxc8+ Kxc8) 35... Rxb2+ 36. Kd1 Rxc3 37. a4 Rb1+ 38. Ke2 Rb2+ 39. Ke3 d5 40. a5 Bg5+ 41. Kf3 e4+ 42. Kg4 Rg2+ 43. Kf5 Rxd3 44. Ke5 Bf6+ 45. Kf5 Rf3# { Black wins by checkmate. } 0-1