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Puzzles (3 cohencoins award for each match):

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/7egY60vj"] [Date "2026.05.24"] [White "Matthew12"] [Black "Aaron9"] [Result "1-0"] [UTCDate "2026.05.24"] [UTCTime "17:05:18"] [WhiteElo "1420"] [BlackElo "1295"] [WhiteRatingDiff "+12"] [BlackRatingDiff "-28"] [WhiteTitle "NM⍩"] [Variant "Standard"] [TimeControl "420+2"] [ECO "C50"] [Opening "Four Knights Game: Italian Variation"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Nc3?! { (0.30 → -0.23) 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 { C50 Four Knights Game: Italian Variation } 5. Ng5?! { (0.16 → -0.59) Inaccuracy. d3 was best. } (5. d3 d6 6. a4 h6 7. O-O O-O 8. a5 Bg4 9. h3 Bxf3 10. Qxf3 Nd4 11. Qd1 c6) 5... Qe7? { (-0.59 → 0.91) Mistake. O-O was best. } (5... O-O 6. d3) 6. Nxf7?? { (0.91 → -2.46) Blunder. Bxf7+ was best. } (6. Bxf7+ Kd8 7. Bb3 Rf8 8. O-O h6 9. Nd5 Nxd5 10. exd5 hxg5 11. dxc6 dxc6 12. d3 a5) 6... Rg8?? { (-2.46 → 1.30) Blunder. Rf8 was best. } (6... Rf8 7. d3 Rxf7 8. O-O d6 9. Bxf7+ Qxf7 10. Na4 Bg4 11. Qd2 O-O-O 12. Nxc5 dxc5 13. f4) 7. Nd6+?? { (1.30 → -1.42) Blunder. Ng5 was best. } (7. Ng5) 7... cxd6? { (-1.42 → 0.03) Mistake. Bxd6 was best. } (7... Bxd6) 8. Bxg8 Nxg8 9. Nd5 Qe6?? { (0.00 → 7.30) Blunder. Qh4 was best. } (9... Qh4 10. O-O Nf6 11. d4 Bxd4 12. Nc7+ Kd8 13. Nxa8 Ng4 14. h3 Nxf2 15. Rxf2 Bxf2+ 16. Kh1) 10. Nc7+ Kd8 11. Nxe6+ Ke7 12. Nxc5 b6 13. Nd3 Nf6 14. O-O Ba6 15. Re1 Kf7 16. Nxe5+ dxe5 17. d3 d6 18. Bg5 Ng4 19. Qxg4 h6 20. Qf5+ Kg8 21. Qe6+ Kh8 22. Re3 Nd4 23. Qf7 Nxc2?! { (17.29 → Mate in 3) Checkmate is now unavoidable. Bc8 was best. } (23... Bc8 24. Qf8+) 24. Rh3 Nxa1 25. Bxh6 Kh7 26. Bxg7# { White wins by checkmate. } 1-0
Computer analysisMove timesCrosstableFEN & PGN
Reconnecting