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Puzzles (3 cohencoins award for each match):

Puzzle x7uBP: 279

FEN
[Event "MrCohenOS Arena"] [Site "https://cohenchessclub.com/NfVD7Y8m"] [Date "2025.06.23"] [White "Walker"] [Black "BraveBishop"] [Result "1-0"] [UTCDate "2025.06.23"] [UTCTime "15:41:50"] [WhiteElo "1356"] [BlackElo "1422"] [WhiteRatingDiff "+7"] [BlackRatingDiff "-85"] [WhiteTitle "⚡"] [BlackTitle "GM"] [Variant "Standard"] [TimeControl "420+2"] [ECO "B10"] [Opening "Caro-Kann Defense: Two Knights Attack"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 c6 2. Nf3 d5 3. Nc3 { B10 Caro-Kann Defense: Two Knights Attack } Nf6 4. exd5?! { (0.59 → 0.06) Inaccuracy. e5 was best. } (4. e5 Ne4 5. d4 Nxc3 6. bxc3 c5 7. dxc5 e6 8. Rb1 Bxc5 9. Bd3 Qc7 10. O-O Nc6) 4... cxd5 5. Bb5+ Nc6 6. Bxc6+ bxc6 7. O-O Bg4 8. d3 Bxf3?! { (-0.74 → -0.12) Inaccuracy. e6 was best. } (8... e6 9. h3) 9. Qxf3 Qc8 10. Bg5 h6? { (-0.06 → 1.31) Mistake. Qg4 was best. } (10... Qg4 11. Qxg4 Nxg4 12. h3 Ne5 13. Be3 e6 14. Na4 Bd6 15. f4 Nd7 16. c4 O-O 17. Rac1) 11. Bxf6 exf6? { (1.17 → 2.31) Mistake. gxf6 was best. } (11... gxf6) 12. Rae1+ Be7 13. Qe3?? { (2.25 → 0.28) Blunder. Re2 was best. } (13. Re2 Kf8) 13... Qd8?? { (0.28 → 2.54) Blunder. Qd7 was best. } (13... Qd7 14. Na4 Kf8 15. Nc5 Qd6 16. d4 g6 17. Re2 Qc7 18. Rfe1 Bd6 19. g3 h5 20. h4) 14. b4?? { (2.54 → -2.26) Blunder. Qc5 was best. } (14. Qc5 Kd7) 14... Rb8?? { (-2.26 → 2.89) Blunder. d4 was best. } (14... d4) 15. b5?? { (2.89 → -1.03) Blunder. Qxa7 was best. } (15. Qxa7 Rc8) 15... cxb5?? { (-1.03 → 7.57) Blunder. d4 was best. } (15... d4 16. Qg3) 16. Qxa7 b4 17. Nxd5 Ra8? { (7.46 → Mate in 4) Checkmate is now unavoidable. O-O was best. } (17... O-O 18. Nxe7+ Kh7 19. Qc5 Qd7 20. Qc6 Qxc6 21. Nxc6 Rb6 22. Nd4 Rc8 23. Rb1 b3 24. axb3) 18. Nc7+? { (Mate in 4 → 8.53) Lost forced checkmate sequence. Rxe7+ was best. } (18. Rxe7+ Kf8 19. Rxf7+ Kg8 20. Rxg7+ Kf8 21. Qf7#) 18... Kd7 19. Nxa8+ Ke8 20. Nc7+ Kd7?! { (11.12 → Mate in 10) Checkmate is now unavoidable. Kf8 was best. } (20... Kf8 21. Re2) 21. Nb5+?! { (Mate in 10 → 21.18) Lost forced checkmate sequence. Nd5+ was best. } (21. Nd5+ Kd6 22. Nxb4 Re8 23. Qa6+ Kc7 24. Qc6+ Kb8 25. Rb1 Qc8 26. Nd5+ Bb4 27. Rxb4+ Ka7) 21... Ke8?! { (21.18 → Mate in 10) Checkmate is now unavoidable. Kc6 was best. } (21... Kc6 22. Qa6+) 22. f4?! { (Mate in 10 → 11.34) Lost forced checkmate sequence. Rxe7+ was best. } (22. Rxe7+ Qxe7 23. Qb8+ Kd7 24. Qc7+ Ke6 25. Nd4+ Kd5 26. Qc4+ Kd6 27. Qc6+ Ke5 28. Re1+ Kf4) 22... h5?! { (11.34 → Mate in 6) Checkmate is now unavoidable. Kf8 was best. } (22... Kf8 23. Re2 b3 24. Rfe1 Bb4 25. Qc7 Qa8 26. c3 Kg8 27. cxb4 bxa2 28. Re8+ Qxe8 29. Rxe8+) 23. d4?! { (Mate in 6 → 10.65) Lost forced checkmate sequence. Rxe7+ was best. } (23. Rxe7+ Qxe7 24. Qb8+ Kd7 25. Qc7+ Ke6 26. f5+ Kd5 27. Qc4+ Ke5 28. Qe4#) 23... h4?! { (10.65 → Mate in 9) Checkmate is now unavoidable. Kf8 was best. } (23... Kf8 24. f5) 24. d5?! { (Mate in 9 → 18.03) Lost forced checkmate sequence. Rxe7+ was best. } (24. Rxe7+ Qxe7 25. Qb8+ Kd7 26. Qc7+ Ke6 27. f5+ Kd5 28. c4+ bxc3 29. Nxc3+ Kxd4 30. Rd1+ Ke3) 24... h3?! { (18.03 → Mate in 6) Checkmate is now unavoidable. Kf8 was best. } (24... Kf8 25. d6) 25. gxh3?! { (Mate in 6 → 17.23) Lost forced checkmate sequence. Rxe7+ was best. } (25. Rxe7+ Qxe7 26. Qb8+ Kd7 27. Qc7+ Ke8 28. Qc8+ Qd8 29. Re1+ Kf8 30. Qxd8#) 25... Rxh3 26. d6 f5?! { (18.75 → Mate in 5) Checkmate is now unavoidable. Rh6 was best. } (26... Rh6 27. Rxe7+) 27. dxe7 Qxe7 28. Qxe7# { White wins by checkmate. } 1-0
Computer analysisMove timesCrosstableFEN & PGN
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