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Puzzles (3 cohencoins award for each match):

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/X6nxB2K5"] [Date "2025.09.26"] [White "Christian1"] [Black "Islomjon"] [Result "1-0"] [UTCDate "2025.09.26"] [UTCTime "23:31:02"] [WhiteElo "1613"] [BlackElo "1370"] [WhiteRatingDiff "+3"] [BlackRatingDiff "-4"] [WhiteTitle "NM🐍"] [BlackTitle "GM"] [Variant "Standard"] [TimeControl "420+2"] [ECO "C48"] [Opening "Four Knights Game: Spanish Variation, Classical Variation"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. Nf3 Nc6 2. Nc3?! { (0.79 → 0.08) Inaccuracy. d4 was best. } (2. d4 d5 3. c4 e6 4. Nc3 Nf6 5. Bg5 Be7 6. e3 h6 7. Bf4 O-O 8. Rc1 Bd6) 2... Nf6 3. e4 e5 4. Bb5 Bc5 { C48 Four Knights Game: Spanish Variation, Classical Variation } 5. Bxc6 dxc6 6. Nxe5 O-O?! { (0.15 → 1.03) Inaccuracy. Bd4 was best. } (6... Bd4 7. Nf3 Bxc3 8. bxc3 Nxe4 9. Qe2 Qe7 10. d3 Nd6 11. Qxe7+ Kxe7 12. a4 b6 13. Bf4) 7. h3?? { (1.03 → -1.01) Blunder. f4 was best. } (7. f4 Bd4 8. Qf3 Bxe5 9. fxe5 Ng4 10. Qg3 h5 11. d3 f5 12. h3 h4 13. Qf4 fxe4) 7... Bd4?! { (-1.01 → -0.19) Inaccuracy. Qd4 was best. } (7... Qd4 8. Nd3) 8. Nf3 Bxc3 9. dxc3 Qxd1+ 10. Kxd1 Be6?? { (-0.62 → 2.02) Blunder. Nxe4 was best. } (10... Nxe4 11. Be3 Rd8+ 12. Kc1 b6 13. a4 c5 14. a5 Bb7 15. c4 Nd6 16. b3 f6 17. Kb2) 11. Re1 Bc4?? { (1.75 → 3.81) Blunder. Rad8+ was best. } (11... Rad8+ 12. Bd2 Bc8 13. b3 Rde8 14. e5 Nd7 15. c4 b6 16. Bc3 c5 17. Kd2 Bb7 18. Rad1) 12. b3?! { (3.81 → 2.82) Inaccuracy. Bf4 was best. } (12. Bf4 Rac8 13. b3 Be6 14. a4 c5 15. c4 Nd7 16. a5 f6 17. Kc1 Rfe8 18. Nd2 Nf8) 12... Be6?! { (2.82 → 3.82) Inaccuracy. Rad8+ was best. } (12... Rad8+ 13. Bd2 Ba6 14. Kc1 Rde8 15. e5 Nd7 16. c4 b6 17. Bc3 Bb7 18. Kb2 c5 19. Nh4) 13. Bd2 Rad8 14. Kc1 Rfe8 15. Kb2 Bc8 16. Bg5 h6 17. Bxf6 gxf6 18. Rad1 Rxd1 19. Rxd1 c5 20. b4 cxb4 21. cxb4 Rxe4?? { (2.97 → 7.92) Blunder. Kg7 was best. } (21... Kg7 22. Re1) 22. Rd8+ Kg7 23. Rxc8 Rxb4+ 24. Ka3 Rc4 25. Kb3 Rf4 26. Rxc7 b5 27. Rxa7 Rc4 28. Rb7 Kg6 29. Rxb5 f5 30. Kxc4 f4?! { (59.81 → Mate in 9) Checkmate is now unavoidable. f4 was best. } (30... f4 31. Nd4 h5 32. Rf5 f3 33. Rxf3 Kg7 34. Rf4 Kg6 35. Rf5 h4 36. Rf4 Kg7 37. Rxh4) 31. g4?! { (Mate in 9 → 66.59) Lost forced checkmate sequence. a4 was best. } (31. a4 h5 32. a5 Kh6 33. a6 h4 34. a7 Kg6 35. a8=Q Kf6 36. Qh8+ Ke6 37. Qe5+ Kd7) 31... fxg3 32. fxg3 f5?! { (66.91 → Mate in 9) Checkmate is now unavoidable. Kf6 was best. } (32... Kf6 33. Rb6+) 33. g4 fxg4 34. hxg4 Kg7 35. g5 h5 36. Rb6 h4 37. Nxh4 Kf8 38. g6 Kg7 39. Nf5+ Kg8 40. Rb8# { White wins by checkmate. } 1-0
Computer analysisMove timesCrosstableFEN & PGN
Reconnecting