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Puzzles (3 cohencoins award for each match):

Puzzle ZkUSB: 669

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/CrEYAJoc"] [Date "2026.10.09"] [White "RoWaN"] [Black "PJ"] [Result "0-1"] [UTCDate "2026.10.09"] [UTCTime "20:30:59"] [WhiteElo "1689"] [BlackElo "1985"] [WhiteRatingDiff "-3"] [BlackRatingDiff "+2"] [WhiteTitle "𝄡"] [BlackTitle "GM🐶"] [Variant "Standard"] [TimeControl "420+2"] [ECO "C45"] [Opening "Scotch Game: Classical Variation"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 { C45 Scotch Game: Classical Variation } 5. c3? { (0.35 → -1.04) Mistake. Nb3 was best. } (5. Nb3 Bb6 6. Qe2 a5 7. a4 Nf6 8. Nc3 O-O 9. Bg5 h6 10. Bh4 Nd4 11. Nxd4 Bxd4) 5... Qf6? { (-1.04 → 0.33) Mistake. Nf6 was best. } (5... Nf6 6. Nd2) 6. Bc4?! { (0.33 → -0.64) Inaccuracy. Be3 was best. } (6. Be3 Nge7 7. Bc4 b6 8. Qd2 O-O 9. O-O d5 10. Nxc6 dxc4 11. Bxc5 bxc5 12. Nxe7+ Qxe7) 6... Nxd4 7. cxd4 Bxd4 8. O-O Ne7 9. Qd3?! { (-0.49 → -1.05) Inaccuracy. Bg5 was best. } (9. Bg5 Qxg5 10. Qxd4 Nc6 11. Qc3 d6 12. Bd5 O-O 13. f4 Qd8 14. Bxc6 bxc6 15. Qxc6 Rb8) 9... d6 10. Nc3 Bxc3 11. bxc3 O-O 12. Ba3 Be6 13. Rac1?! { (-1.47 → -2.39) Inaccuracy. f4 was best. } (13. f4 Rfe8 14. Bb5 c6 15. Ba4 d5 16. e5 Qg6 17. Qxg6 hxg6 18. Rfb1 b6 19. Rf1 Bd7) 13... Nc6 14. Bd5?! { (-2.12 → -2.87) Inaccuracy. Bb3 was best. } (14. Bb3 Bxb3) 14... Ne5 15. Qe2 Bxd5 16. exd5 Rae8 17. Qb2?? { (-2.87 → -6.85) Blunder. c4 was best. } (17. c4 Ng6) 17... Qh4?? { (-6.85 → -2.39) Blunder. Nd3 was best. } (17... Nd3 18. Qxb7 Nxc1 19. Bxc1 Qxc3 20. Be3 Qc4 21. h3 Rb8 22. Qxa7 Ra8 23. Qb7 Rfb8 24. Rb1) 18. Qb3?! { (-2.39 → -3.34) Inaccuracy. Qxb7 was best. } (18. Qxb7 Nd3) 18... f5 19. c4 f4 20. Rc3?? { (-2.66 → -7.37) Blunder. f3 was best. } (20. f3 b6 21. Bb2 Rf5 22. Kh1 Rh5 23. h3 Ng6 24. Qd1 Qg3 25. Rc2 Nh4 26. Re2 Re3) 20... f3 21. Rd1? { (-7.47 → Mate in 3) Checkmate is now unavoidable. gxf3 was best. } (21. gxf3 Qh5) 21... fxg2?! { (Mate in 3 → -10.47) Lost forced checkmate sequence. Ng4 was best. } (21... Ng4 22. Rxf3 Qxh2+ 23. Kf1 Qh1#) 22. Rg3 Ng4 23. h3 Nxf2 24. Rc1?! { (-13.87 → Mate in 6) Checkmate is now unavoidable. Rxg2 was best. } (24. Rxg2 Nxd1) 24... Nxh3+ 25. Kxg2 Rf2+ 26. Kh1 Ng1+ 27. Rh3 Nxh3 28. Rc3 Re1# { Black wins by checkmate. } 0-1
RapidOverall
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17
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