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Puzzles (3 cohencoins award for each match):

Puzzle oYp5i: 999999999

 Mark (1520) +4
FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/SWtyqafk"] [Date "2026.02.02"] [White "Scarlett"] [Black "Mark"] [Result "0-1"] [UTCDate "2026.02.02"] [UTCTime "16:15:46"] [WhiteElo "1284"] [BlackElo "1520"] [WhiteRatingDiff "-12"] [BlackRatingDiff "+4"] [WhiteTitle "WIM"] [BlackTitle "⛳"] [Variant "Standard"] [TimeControl "420+2"] [ECO "B10"] [Opening "Caro-Kann Defense"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 c6 { B10 Caro-Kann Defense } 2. Nf3 d5 3. exd5 cxd5 4. Nc3 Nf6 5. d3?! { (0.00 → -0.61) Inaccuracy. d4 was best. } (5. d4 Bg4 6. h3 Bxf3 7. Qxf3 Nc6 8. Be3 e6 9. Bd3 Nb4 10. Bb5+ Nc6) 5... Bf5?! { (-0.61 → -0.06) Inaccuracy. e5 was best. } (5... e5) 6. Bg5?! { (-0.06 → -0.75) Inaccuracy. d4 was best. } (6. d4) 6... e6 7. Bxf6 Qxf6 8. d4 Bd6? { (-1.41 → 0.04) Mistake. Nc6 was best. } (8... Nc6 9. h3) 9. Bd3? { (0.04 → -1.07) Mistake. Nb5 was best. } (9. Nb5 Qd8 10. Nxd6+ Qxd6 11. Bd3 Bxd3 12. Qxd3 Nd7 13. O-O O-O 14. c3 Qb6 15. Rab1 Rfc8) 9... Bxd3 10. Qxd3 Nc6 11. O-O-O e5?? { (-1.01 → 6.11) Blunder. a6 was best. } (11... a6 12. h4 h5 13. Rhe1 Be7 14. Kb1 b5 15. Qe3 O-O 16. Ne2 Rfc8 17. Nf4 Qf5 18. Rg1) 12. dxe5 Nxe5 13. Rhe1? { (6.75 → 3.69) Mistake. Qb5+ was best. } (13. Qb5+ Kf8) 13... O-O 14. Nxe5?! { (4.46 → 3.55) Inaccuracy. Nxe5 was best. } (14. Nxe5) 14... Bxe5 15. Nxd5 Qg5+ 16. Rd2?! { (4.92 → 3.66) Inaccuracy. Qe3 was best. } (16. Qe3 Qxe3+ 17. Rxe3 f6 18. f4 Bd6 19. Ne7+ Bxe7 20. Rxe7 Rae8 21. Rxb7 Re2 22. Rxa7 Rxg2) 16... Bxh2?! { (3.66 → 5.44) Inaccuracy. Rfe8 was best. } (16... Rfe8 17. Rd1) 17. Qh3?? { (5.44 → 0.35) Blunder. g3 was best. } (17. g3 Rad8) 17... Bf4 18. Nxf4 Qxf4 19. Re3 g6?! { (-0.11 → 0.54) Inaccuracy. Rae8 was best. } (19... Rae8 20. a3) 20. Rf3?! { (0.54 → 0.00) Inaccuracy. Qf3 was best. } (20. Qf3 Qxf3 21. Rxf3 Rfd8 22. Rc3 Rxd2 23. Kxd2 h5 24. Rc7 b6 25. b4 Kg7 26. f4 a6) 20... Qc4 21. b3 Qa6 22. Qh4?? { (0.09 → -1.45) Blunder. Kb2 was best. } (22. Kb2 Rad8 23. Rd7 Qb6 24. a4 h5 25. Rf4 a6 26. Qd3 Rxd7 27. Qxd7 Qc5 28. g3 Qe5+) 22... Qxa2 23. Rh3?? { (-1.40 → Mate in 1) Checkmate is now unavoidable. Qa4 was best. } (23. Qa4 Qxa4 24. bxa4 Rfd8 25. Rc3 Rxd2 26. Kxd2 Rd8+ 27. Ke3 Re8+ 28. Kd3 Kf8 29. a5 h5) 23... Qa1# { Black wins by checkmate. } 0-1
Computer analysisMove timesCrosstableFEN & PGN
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