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Puzzles (3 cohencoins award for each match):

Puzzle iv9Yo: 999999999

Eitan1 (1168) +11
FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/tuOU0uwr"] [Date "2025.10.24"] [White "Robbie3"] [Black "Eitan1"] [Result "0-1"] [UTCDate "2025.10.24"] [UTCTime "23:33:35"] [WhiteElo "1174"] [BlackElo "1168"] [WhiteRatingDiff "-11"] [BlackRatingDiff "+11"] [WhiteTitle "NM"] [Variant "Standard"] [TimeControl "420+2"] [ECO "C48"] [Opening "Four Knights Game: Spanish Variation"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 { C48 Four Knights Game: Spanish Variation } d5?? { (0.01 → 2.53) Blunder. Nd4 was best. } (4... Nd4 5. Nxd4 exd4 6. e5 dxc3 7. exf6 Qxf6 8. dxc3 Qe5+ 9. Qe2 Qxe2+ 10. Bxe2 Bc5 11. O-O) 5. exd5 Nxd5 6. O-O? { (2.96 → 1.37) Mistake. Nxe5 was best. } (6. Nxe5 Nxc3 7. dxc3 Qxd1+ 8. Kxd1 Bd7 9. Nxd7 Kxd7 10. Ke2 Re8+ 11. Kf1 Bc5 12. Bf4 Kc8) 6... e4?? { (1.37 → 3.62) Blunder. Nxc3 was best. } (6... Nxc3 7. bxc3 Bd6 8. Nxe5 Bxe5 9. Bxc6+ bxc6 10. Re1 Qe7 11. h3 O-O 12. d4 f6 13. Bf4) 7. Ne5?! { (3.62 → 2.56) Inaccuracy. Nxe4 was best. } (7. Nxe4 Be7 8. Re1 O-O 9. d4 Nf6 10. Nxf6+ Bxf6 11. c3 Ne7 12. a4 Be6 13. a5 Ng6) 7... a6?? { (2.56 → 7.97) Blunder. Qd6 was best. } (7... Qd6) 8. Nxc6 bxc6 9. Bxc6+ Bd7 10. Bxd7+? { (9.13 → 4.52) Mistake. Bxd5 was best. } (10. Bxd5 c6 11. Bc4 Be7 12. Re1 O-O 13. Rxe4 Bb4 14. Rd4 Bc5 15. Rxd7 Bxf2+ 16. Kxf2 Qxd7) 10... Qxd7 11. Nxe4 Nf4?! { (4.53 → 7.69) Inaccuracy. Be7 was best. } (11... Be7 12. d4) 12. Qf3 Ne6 13. Nc5 Ng5 14. Re1+ Be7 15. Qxa8+ Qd8 16. Qxa6 Ne6 17. Rxe6 fxe6 18. Nxe6 Qd5 19. Qc8+ Kf7 20. Qxh8 Qxe6 21. Qxh7?? { (9.34 → Mate in 1) Checkmate is now unavoidable. Kf1 was best. } (21. Kf1 Qc4+ 22. d3 Qxc2 23. Bh6 Qxd3+ 24. Kg1 Bf8 25. Rc1 c5 26. Bxg7 Bxg7 27. Qc8 Qe4) 21... Qe1# { Black wins by checkmate. } 0-1
Computer analysisMove timesCrosstableFEN & PGN
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