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Puzzles (3 cohencoins award for each match):

Puzzle 507YV: 926

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/caO85N40"] [Date "2025.10.05"] [White "Sasha"] [Black "Christian1"] [Result "0-1"] [UTCDate "2025.10.05"] [UTCTime "17:03:02"] [WhiteElo "1536"] [BlackElo "1628"] [WhiteRatingDiff "-7"] [BlackRatingDiff "+5"] [WhiteTitle "IM🧁"] [BlackTitle "NM🐍"] [Variant "Standard"] [TimeControl "420+2"] [ECO "D02"] [Opening "Queen's Pawn Game: London System"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. d4 d5 2. Nf3 Nf6 3. Bf4 { D02 Queen's Pawn Game: London System } Nc6?! { (0.09 → 0.65) Inaccuracy. c5 was best. } (3... c5 4. e3 e6 5. Be2 Qb6 6. b3 cxd4 7. exd4 Bd6 8. Be3 O-O 9. O-O Qc7 10. c4) 4. e3 e6 5. c3 Bd6 6. Bg3 Bxg3 7. hxg3 Bd7 8. Bd3?! { (0.69 → 0.04) Inaccuracy. Nbd2 was best. } (8. Nbd2 Qe7 9. Ne5 Nxe5 10. dxe5 Ng8 11. Nf3 f6 12. Be2 Nh6 13. exf6 Qxf6 14. Qd4 Nf7) 8... Qe7 9. Nbd2 e5 10. dxe5 Nxe5 11. Nxe5 Qxe5 12. O-O O-O 13. Nf3 Qd6?! { (-0.37 → 0.20) Inaccuracy. Qe7 was best. } (13... Qe7) 14. Qe2 c6 15. Rfd1 Rad8 16. c4 Qe7 17. cxd5 cxd5 18. b3 Rc8 19. Rdc1 Rxc1+ 20. Rxc1 Rc8 21. Rxc8+ Bxc8 22. Nd4 Qa3 23. Bf5? { (0.89 → -0.44) Mistake. Qc2 was best. } (23. Qc2 Bd7 24. Bb5 Qd6 25. Bxd7 Qxd7 26. f3 h5 27. Qc3 Qe7 28. a4 g6 29. Ne2 a6) 23... Bxf5 24. Nxf5 Qc1+ 25. Kh2 Qc8?? { (-0.52 → 9.84) Blunder. h5 was best. } (25... h5 26. f3 Qc3 27. Nd4 a6 28. Nc2 Qe5 29. Kh3 Qb2 30. Nd4 Qc3 31. Nc2 Nd7 32. Qd1) 26. f3?? { (9.84 → -7.90) Blunder. Ne7+ was best. } (26. Ne7+ Kh8 27. Nxc8 a6 28. Nd6 Kg8 29. Nxb7 h6 30. f3 a5 31. Qa6 a4 32. bxa4 Kh7) 26... Qxf5 { White resigns. } 0-1
Computer analysisMove timesCrosstableFEN & PGN
Reconnecting