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Puzzles (3 cohencoins award for each match):

Puzzle Hzz1i: 370

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/16ad2UW8"] [Date "2025.12.17"] [White "Walker"] [Black "Ioana"] [Result "1-0"] [UTCDate "2025.12.17"] [UTCTime "21:33:02"] [WhiteElo "1537"] [BlackElo "843"] [WhiteRatingDiff "+1"] [BlackRatingDiff "+0"] [WhiteTitle "⚡"] [Variant "Standard"] [TimeControl "420+2"] [ECO "C40"] [Opening "King's Knight Opening"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 e5 2. Nf3 { C40 King's Knight Opening } Bd6?! { (0.50 → 1.30) Inaccuracy. Nc6 was best. } (2... Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bb7 7. Re1 Bc5 8. c3 d6 9. d4) 3. Bc4 Nf6 4. d4 exd4?? { (1.12 → 3.93) Blunder. Nc6 was best. } (4... Nc6 5. dxe5 Bxe5 6. Nxe5 Nxe5 7. Be2 O-O 8. Nc3 Re8 9. f4 Nc6 10. e5 d5 11. exf6) 5. Nxd4?? { (3.93 → 0.29) Blunder. e5 was best. } (5. e5) 5... Nxe4 6. Qe2?? { (0.50 → -1.15) Blunder. Nf5 was best. } (6. Nf5 Qf6) 6... f5?? { (-1.15 → 7.34) Blunder. O-O was best. } (6... O-O 7. O-O Nf6 8. Bg5 h6 9. Bxf6 Qxf6 10. Nf3 Qxb2 11. Nbd2 Qxc2 12. Bd3 Qc6 13. Nc4) 7. f3?? { (7.34 → 1.51) Blunder. Nxf5 was best. } (7. Nxf5 Bb4+ 8. c3 d5 9. Nxg7+ Kf7 10. Qh5+ Kxg7 11. Bh6+ Kf6 12. Bxd5 Qe8 13. Qh4+ Ng5+) 7... c5?? { (1.51 → 9.40) Blunder. Be5 was best. } (7... Be5) 8. fxe4?? { (9.40 → 2.28) Blunder. Nxf5 was best. } (8. Nxf5) 8... fxe4?? { (2.28 → 10.72) Blunder. Qh4+ was best. } (8... Qh4+ 9. g3) 9. Qxe4+ Kf8? { (8.91 → Mate in 4) Checkmate is now unavoidable. Qe7 was best. } (9... Qe7 10. Qxe7+) 10. Qf5+?! { (Mate in 4 → 10.77) Lost forced checkmate sequence. Rf1+ was best. } (10. Rf1+ Bf4 11. Rxf4+ Qf6 12. Rxf6+ gxf6 13. Bh6#) 10... Ke7?! { (10.77 → Mate in 1) Checkmate is now unavoidable. Qf6 was best. } (10... Qf6 11. O-O) 11. Qf7# { White wins by checkmate. } 1-0
Computer analysisMove timesCrosstableFEN & PGN
Reconnecting