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Puzzles (3 cohencoins award for each match):

Puzzle AAXga: 582

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/iHWfAlHd"] [Date "2025.12.19"] [White "Kristofer"] [Black "Bohdan"] [Result "1-0"] [UTCDate "2025.12.19"] [UTCTime "21:34:47"] [WhiteElo "1618"] [BlackElo "1505"] [WhiteRatingDiff "+9"] [BlackRatingDiff "-6"] [WhiteTitle "GM😈"] [BlackTitle "🐍"] [Variant "Standard"] [TimeControl "420+2"] [ECO "C55"] [Opening "Italian Game: Two Knights Defense"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 e5 2. Nf3 Nf6 3. Bc4?? { (0.75 → -0.82) Blunder. Nxe5 was best. } (3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. O-O Be7 8. c4 Nf6 9. Nc3 O-O) 3... Nc6? { (-0.82 → 0.30) Mistake. Nxe4 was best. } { C55 Italian Game: Two Knights Defense } (3... Nxe4 4. Nc3 Nxc3 5. dxc3 f6 6. Nh4 g6 7. f4 Qe7 8. f5 Qg7 9. Be3 d6 10. a4) 4. O-O?! { (0.30 → -0.50) Inaccuracy. d3 was best. } (4. d3 Bc5 5. O-O d6 6. a4 a6 7. c3 Ba7 8. h3 h6 9. Be3 Bxe3 10. fxe3 O-O) 4... Bc5?! { (-0.50 → 0.33) Inaccuracy. Nxe4 was best. } (4... Nxe4 5. Bb5 Be7 6. Re1 Nd6 7. Bxc6 dxc6 8. Nxe5 O-O 9. h3 Re8 10. d3 f6 11. Nf3) 5. Nc3 Ng4? { (0.10 → 1.65) Mistake. d6 was best. } (5... d6 6. a4 O-O 7. a5 Nd4 8. Nxd4 exd4 9. Nd5 Nxd5 10. Bxd5 c6 11. Ba2 Re8 12. h3) 6. d4?! { (1.65 → 0.70) Inaccuracy. Nd5 was best. } (6. Nd5 Be7 7. h3 Nf6 8. Nxe7 Qxe7 9. d4 d6 10. Re1 O-O 11. a4 Nxd4 12. Nxd4 exd4) 6... Nxd4?? { (0.70 → 6.29) Blunder. exd4 was best. } (6... exd4 7. Na4 Be7 8. Nxd4 Nxd4 9. Qxd4 O-O 10. Bf4 d6 11. Nc3 Bf6 12. Qd2 Ne5 13. Be2) 7. Be3?? { (6.29 → 0.07) Blunder. Nxd4 was best. } (7. Nxd4) 7... Nxe3?! { (0.07 → 0.78) Inaccuracy. d5 was best. } (7... d5) 8. fxe3?! { (0.78 → 0.00) Inaccuracy. Bxf7+ was best. } (8. Bxf7+ Kxf7) 8... Nc6?? { (0.00 → 7.29) Blunder. Nxf3+ was best. } (8... Nxf3+ 9. Qxf3 O-O 10. Bxf7+ Kh8 11. Na4 Be7 12. Qh5 d6 13. Rf3 Bd7 14. Nc3 c6 15. Raf1) 9. Qe2?? { (7.29 → -1.48) Blunder. Bxf7+ was best. } (9. Bxf7+ Kf8) 9... Nb4?? { (-1.48 → 5.27) Blunder. O-O was best. } (9... O-O 10. a3 d6 11. b4 Bb6 12. Nd5 Be6 13. c3 Bxd5 14. Bxd5 Qe7 15. Nd2 Nd8 16. a4) 10. a3 Nc6 11. Rad1?? { (6.43 → 0.36) Blunder. Bxf7+ was best. } (11. Bxf7+ Kf8 12. Nd2 g6 13. Bxg6+ Kg7 14. Bf5 Ne7 15. Nd5 Rf8 16. Qh5 Nxf5 17. Rxf5 Rxf5) 11... d5?? { (0.36 → 7.34) Blunder. O-O was best. } (11... O-O 12. b4 Bb6 13. Nd5 d6 14. a4 a6 15. Nxb6 cxb6 16. b5 Na5 17. Nxe5 Nxc4 18. Nxc4) 12. exd5 Qf6 13. dxc6 bxc6 14. Ne4 Qg6 15. Nxc5 Bf5 16. Bd3 e4 17. Ne5 Qd6 18. Rxf5 Qxc5 19. Bxe4 O-O 20. Nd7 Qb5 21. Qxb5 cxb5 22. Nxf8 Rxf8 23. Rfd5 f5 24. Bf3 Rf6 25. Rd8+ Kf7 26. Bd5+ Kg6 27. e4 fxe4 28. Bxe4+ Kg5 29. R8d5+ Kf4 30. Bd3 Ke3?! { (21.76 → Mate in 6) Checkmate is now unavoidable. Re6 was best. } (30... Re6 31. Rf1+ Ke3 32. Re1+ Kd2 33. Rxe6 h6 34. Re2+ Kc1 35. Rxb5 Kd1 36. Kf2 h5 37. Re1+) 31. Bxb5?! { (Mate in 6 → 19.98) Lost forced checkmate sequence. Re5+ was best. } (31. Re5+ Kf4 32. Rde1 Rf5 33. Rxf5+ Kg4 34. h3+ Kg3 35. Re4 h6 36. Rg4#) 31... Rf2?! { (19.98 → Mate in 4) Checkmate is now unavoidable. Ke4 was best. } (31... Ke4 32. c3) 32. R1d3+ Ke2 33. Rf3+ Ke1 34. Rxf2 c5 35. Re2# { White wins by checkmate. } 1-0
Computer analysisMove timesCrosstableFEN & PGN
Reconnecting