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Puzzles (3 cohencoins award for each match):

Puzzle OZwRN: 500

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/p845JNj4"] [Date "2025.09.07"] [White "Francis"] [Black "Sasha"] [Result "0-1"] [UTCDate "2025.09.07"] [UTCTime "17:44:04"] [WhiteElo "1413"] [BlackElo "1541"] [WhiteRatingDiff "-7"] [BlackRatingDiff "+5"] [WhiteTitle "θ"] [BlackTitle "IM🧁"] [Variant "Standard"] [TimeControl "420+2"] [ECO "E20"] [Opening "Nimzo-Indian Defense: Romanishin Variation"] [Termination "Time forfeit"] [Annotator "cohenchessclub.com"] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. g3 { E20 Nimzo-Indian Defense: Romanishin Variation } Bxc3+ 5. bxc3 Nc6 6. d5?! { (-0.11 → -0.80) Inaccuracy. Bg2 was best. } (6. Bg2) 6... exd5? { (-0.80 → 0.34) Mistake. Na5 was best. } (6... Na5 7. Nf3) 7. cxd5 Nxd5?? { (0.54 → 7.22) Blunder. Ne5 was best. } (7... Ne5 8. Bg2) 8. Qxd5 d6 9. a4 Be6 10. Qg5 Qxg5 11. Bxg5 O-O 12. Rb1 h6 13. Bf4 Ne7 14. Rxb7? { (5.69 → 3.44) Mistake. Bd2 was best. } (14. Bd2) 14... Nd5 15. Bg2 Nxf4?! { (3.99 → 5.69) Inaccuracy. Rab8 was best. } (15... Rab8 16. Rxb8) 16. gxf4 Rab8 17. Bc6?! { (5.70 → 3.98) Inaccuracy. Rxb8 was best. } (17. Rxb8 Rxb8) 17... Rxb7 18. Bxb7 d5 19. e4?! { (5.89 → 4.55) Inaccuracy. a5 was best. } (19. a5 a6 20. Kf1 g5 21. Bxa6 Ra8 22. Bd3 c5 23. Kg2 Rxa5 24. Nf3 g4 25. Ne5 c4) 19... dxe4 20. Bxe4 Re8 21. Bc6?? { (5.85 → -5.74) Blunder. Ne2 was best. } (21. Ne2 Bc4) 21... Bd5+?? { (-5.74 → 7.61) Blunder. Bd7+ was best. } (21... Bd7+) 22. Bxe8 Bxh1 23. Kf1 Bb7 24. Ke1 f6 25. Ke2 c6 { Black wins on time. } 0-1
Computer analysisMove timesCrosstableFEN & PGN
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