CohenChessClub.com

[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/NImEDtmu"] [Date "2026.10.07"] [White "Alexander9"] [Black "Maria"] [Result "0-1"] [UTCDate "2026.10.07"] [UTCTime "20:04:20"] [WhiteElo "1000"] [BlackElo "1119"] [WhiteRatingDiff "-19"] [BlackRatingDiff "+7"] [BlackTitle "❦"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A00"] [Opening "Zukertort Opening: Reversed Mexican Defense"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. Nf3 d5 2. Nc3 { A00 Zukertort Opening: Reversed Mexican Defense } Nf6 3. e3 Nc6 4. Qe2? { (-0.13 → -1.38) Mistake. d4 was best. } (4. d4 Bg4 5. Be2 e6 6. O-O a6 7. Nb1 Bd6 8. Nbd2 Ne4 9. h3 Bf5 10. c4 O-O) 4... Ng4?? { (-1.38 → 0.62) Blunder. e5 was best. } (4... e5) 5. h3 Nxe3?? { (0.34 → 5.08) Blunder. Nf6 was best. } (5... Nf6 6. d4 e6 7. a3 a6 8. g3 a5 9. e4 dxe4 10. Nxe4 Nxd4 11. Nxd4 Qxd4 12. Bg2) 6. Qxe3?? { (5.08 → 0.88) Blunder. dxe3 was best. } (6. dxe3) 6... d4 7. Qd3?! { (0.83 → 0.27) Inaccuracy. Qe4 was best. } (7. Qe4 dxc3 8. dxc3 e6 9. Bb5 Bd7 10. Bf4 Bd6 11. O-O-O Qe7 12. Rhe1 Bxf4+ 13. Qxf4 O-O-O) 7... dxc3 8. Qxc3 Bf5 9. Nh4? { (0.93 → -0.54) Mistake. Ba6 was best. } (9. Ba6 Qc8) 9... g6?? { (-0.54 → 6.23) Blunder. Be4 was best. } (9... Be4 10. Nf3 Qd6 11. Bc4 Qg6 12. O-O e6 13. Nh4 Qh5 14. d3 Bd5 15. Bxd5 Qxd5 16. Nf3) 10. Bd3?? { (6.23 → -2.81) Blunder. Nxf5 was best. } (10. Nxf5 gxf5 11. Qxh8 Qd5 12. Qc3 O-O-O 13. Qc4 Qe5+ 14. Be2 Nd4 15. Kf1 Bh6 16. c3 Nxe2) 10... Bxd3 11. cxd3?! { (-2.99 → -4.45) Inaccuracy. Qxh8 was best. } (11. Qxh8 Bxc2) 11... f6?! { (-4.45 → -3.46) Inaccuracy. Rg8 was best. } (11... Rg8 12. Qb3 Nd4 13. Qxb7 Rb8 14. Qxa7 Nc2+ 15. Kd1 Nxa1 16. Nf3 Bg7 17. Re1 Bxb2 18. Bxb2) 12. d4?! { (-3.46 → -4.40) Inaccuracy. Nf3 was best. } (12. Nf3 e5) 12... Nxd4? { (-4.40 → -2.69) Mistake. Qxd4 was best. } (12... Qxd4 13. Nf3) 13. Nf3 Nxf3+ 14. Qxf3 e6?? { (-2.61 → -0.62) Blunder. c6 was best. } (14... c6 15. d4 Kf7 16. a4 Qd5 17. Qxd5+ cxd5 18. Bd2 Rc8 19. Ke2 Rc4 20. Rhc1 Rxd4 21. Be3) 15. Qe4?? { (-0.62 → -3.75) Blunder. Qxb7 was best. } (15. Qxb7) 15... c6?? { (-3.75 → -0.69) Blunder. Qd5 was best. } (15... Qd5 16. Qxd5 exd5 17. b3 Kf7 18. Bb2 Bd6 19. Kd1 Rhe8 20. Rc1 c6 21. Re1 Rxe1+ 22. Kxe1) 16. Qxe6+ Be7?! { (-0.79 → -0.10) Inaccuracy. Qe7 was best. } (16... Qe7 17. Qxe7+) 17. O-O Qd6 18. Qe1?? { (0.00 → -1.63) Blunder. Qe3 was best. } (18. Qe3 O-O-O 19. Qxa7 Qc5 20. Qxc5 Bxc5 21. Re1 Rhe8 22. Rxe8 Rxe8 23. Kf1 Rd8 24. Ke2 Re8+) 18... b5?? { (-1.63 → 0.18) Blunder. O-O-O was best. } (18... O-O-O) 19. b3?! { (0.18 → -0.36) Inaccuracy. d3 was best. } (19. d3 Kf7 20. Be3 a5 21. a4 Qd5 22. axb5 Qxb5 23. Qc1 Rhd8 24. d4 Rd5 25. Qc2 Rb8) 19... Qd4 20. Rb1 Kf7 21. Rb2?! { (0.19 → -0.66) Inaccuracy. Bb2 was best. } (21. Bb2 Qf4 22. Rc1 Rhe8 23. g3 Qf3 24. Qe3 Qxe3 25. fxe3 Rac8 26. Kf2 Red8 27. Ke2 h5) 21... Rad8 22. Rc2 Bc5?? { (-0.74 → 1.02) Blunder. c5 was best. } (22... c5 23. Rc3 Rhe8 24. Qe2 c4 25. bxc4 Bb4 26. Re3 bxc4 27. Qf3 a5 28. Qb7+ Qd7 29. Qa6) 23. a4?? { (1.02 → -0.92) Blunder. Bb2 was best. } (23. Bb2) 23... Rhe8 24. axb5?? { (-0.64 → -44.01) Blunder. Qd1 was best. } (24. Qd1 Re6) 24... Rxe1 25. Rxe1 Qxf2+ 26. Kh2 Qxe1? { (Mate in 3 → -8.80) Lost forced checkmate sequence. Bd6+ was best. } (26... Bd6+ 27. Re5 Bxe5+ 28. Kh1 Qe1#) 27. bxc6? { (-8.80 → Mate in 3) Checkmate is now unavoidable. Rxc5 was best. } (27. Rxc5 cxb5) 27... Bd6+ 28. g3 Qf2+ 29. Kh1 Re8 30. c7 Re1# { Black wins by checkmate. } 0-1