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Puzzles (3 cohencoins award for each match):

Puzzle HIONd: 470

GM Drew (1606) +6
FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/mXy5U83I"] [Date "2025.10.20"] [White "Drew"] [Black "ChessMasterPlayer"] [Result "1-0"] [UTCDate "2025.10.20"] [UTCTime "23:44:57"] [WhiteElo "1606"] [BlackElo "1462"] [WhiteRatingDiff "+6"] [BlackRatingDiff "-5"] [WhiteTitle "GM"] [BlackTitle "GM"] [Variant "Standard"] [TimeControl "420+2"] [ECO "B20"] [Opening "Sicilian Defense: Bowdler Attack"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 c5 2. Bc4 { B20 Sicilian Defense: Bowdler Attack } Nc6 3. Qf3?! { (-0.14 → -0.86) Inaccuracy. Nf3 was best. } (3. Nf3 Nf6) 3... Nf6 4. d3 d6 5. Bg5 Be6?! { (-0.81 → 0.10) Inaccuracy. e6 was best. } (5... e6 6. Ne2 h6 7. Bxf6 Qxf6 8. Qxf6 gxf6 9. Nbc3 h5 10. f4 Bh6 11. O-O h4 12. a4) 6. Bxe6 fxe6 7. Bxf6?! { (0.31 → -0.45) Inaccuracy. Ne2 was best. } (7. Ne2 g6) 7... exf6 8. Nc3 e5?? { (-0.13 → 1.50) Blunder. Nd4 was best. } (8... Nd4 9. Qd1) 9. Nd5 Qa5+ 10. c3 O-O-O 11. Nxf6?? { (2.21 → -5.56) Blunder. Ne2 was best. } (11. Ne2 Rd7 12. O-O Ne7 13. b4 Qd8 14. c4 Nxd5 15. exd5 g6 16. bxc5 dxc5 17. a4 f5) 11... gxf6 12. Qxf6 Rg8?? { (-5.52 → 5.51) Blunder. Be7 was best. } (12... Be7 13. Qe6+ Kb8 14. Ne2 Rdg8 15. O-O Rg6 16. Qc4 Qc7 17. f4 Rhg8 18. g3 exf4 19. Nxf4) 13. Qe6+ Kb8 14. Qxg8 Bh6 15. Qxh7 Bf4 16. g3 Bg5 17. h4 Bf6 18. h5 Qb5 19. Qf7 Qxb2 20. Rd1 Be7 21. Nf3? { (8.83 → 3.89) Mistake. Qb3 was best. } (21. Qb3 Qxb3) 21... Qxc3+? { (3.89 → 7.22) Mistake. Rf8 was best. } (21... Rf8 22. Qb3) 22. Nd2?! { (7.22 → 4.97) Inaccuracy. Ke2 was best. } (22. Ke2) 22... Bg5 23. O-O?? { (4.89 → 0.21) Blunder. Qc4 was best. } (23. Qc4) 23... Bxd2 24. Rb1 b6 25. h6?? { (0.00 → -2.89) Blunder. Rb3 was best. } (25. Rb3 Qa5 26. Kg2 Kc8 27. Rh1 Qxa2 28. h6 Nd4 29. h7 Qxb3 30. Qxa7 Qxd3 31. h8=Q Qf3+) 25... Bxh6 26. Rb3 Qa5 27. Rfb1?! { (-3.36 → -4.43) Inaccuracy. Kg2 was best. } (27. Kg2 Bg5) 27... Qxa2?? { (-4.43 → Mate in 3) Checkmate is now unavoidable. Qa6 was best. } (27... Qa6 28. Kg2 Qb7 29. Qe6 Qg7 30. Rh1 Bd2 31. Qd5 Nd4 32. Rbb1 Qb7 33. Rh5 Qxd5 34. exd5) 28. Rxb6+ axb6 29. Rxb6+ Kc8 30. Qb7# { White wins by checkmate. } 1-0
Computer analysisMove timesCrosstableFEN & PGN
Reconnecting