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Puzzles (3 cohencoins award for each match):

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/r7GkFat9"] [Date "2025.09.17"] [White "ZePHyRos"] [Black "Trekker"] [Result "1-0"] [UTCDate "2025.09.17"] [UTCTime "23:53:07"] [WhiteElo "1667"] [BlackElo "1846"] [WhiteRatingDiff "+15"] [BlackRatingDiff "-10"] [WhiteTitle "GM☢"] [BlackTitle "GM🎅"] [Variant "Standard"] [TimeControl "420+2"] [ECO "B02"] [Opening "Alekhine Defense: Scandinavian Variation"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 Nf6 2. Nc3?! { (0.91 → 0.18) Inaccuracy. e5 was best. } (2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 exd6 6. Nf3 Be7 7. Nc3 O-O 8. Be3 Bf6) 2... d5 { B02 Alekhine Defense: Scandinavian Variation } 3. e5 Nfd7 4. d4 c5 5. Nxd5? { (0.35 → -1.00) Mistake. f4 was best. } (5. f4 e6) 5... cxd4 6. Qxd4? { (-1.06 → -2.66) Mistake. e6 was best. } (6. e6 Qa5+) 6... Nb6 7. Bc4?? { (-2.77 → -7.08) Blunder. c4 was best. } (7. c4 e6) 7... e6?! { (-7.08 → -5.31) Inaccuracy. Nc6 was best. } (7... Nc6 8. Qe4 Nxc4 9. Nf3 Bf5 10. Qxc4 Be6 11. Qb5 Bxd5 12. Be3 a6 13. Qxb7 Qc8 14. Qxc8+) 8. Bb5+ Nc6 9. Qc3?! { (-5.47 → -8.62) Inaccuracy. Nf6+ was best. } (9. Nf6+ gxf6 10. Qxd8+ Kxd8 11. Bxc6 bxc6 12. exf6 Ke8 13. Nf3 Bb7 14. Bf4 Nd5 15. Be5 c5) 9... Nxd5 10. Bxc6+ bxc6 11. Qxc6+ Bd7 12. Qc4 Rc8 13. Qd4 Rxc2 14. Nf3 Bb4+ 15. Bd2 Bxd2+ 16. Nxd2 Bc8?? { (-9.07 → 1.48) Blunder. Qa5 was best. } (16... Qa5 17. a4 O-O 18. b4 Qxb4 19. Qxb4 Nxb4 20. Rd1 Nd3+ 21. Ke2 Nf4+ 22. Kf3 Ng6 23. Kg3) 17. Qa4+ Bd7?? { (1.05 → 4.22) Blunder. Qd7 was best. } (17... Qd7 18. Qxc2 Ba6 19. Nc4 Nb4 20. Nd6+ Ke7 21. Qc3 Nd3+ 22. Kd2 Rd8 23. Rhd1 Qa4 24. b3) 18. Qxc2 Qg5 19. O-O-O Qxe5? { (3.36 → 5.65) Mistake. O-O was best. } (19... O-O 20. Kb1) 20. Kb1?! { (5.65 → 4.17) Inaccuracy. Qc5 was best. } (20. Qc5 Qc7) 20... O-O 21. Nf3 Qf6 22. h4?! { (4.60 → 3.56) Inaccuracy. Ka1 was best. } (22. Ka1 Rc8 23. Qd2 Be8 24. Rc1 Rb8 25. Rhe1 h6 26. Rc4 Bb5 27. Rd4 Qd8 28. Rc1) 22... Rb8 23. h5?? { (4.00 → -7.38) Blunder. Ng5 was best. } (23. Ng5 g6) 23... Nc3+ 24. Ka1 Ba4?? { (-7.56 → 7.49) Blunder. Nxd1 was best. } (24... Nxd1) 25. Qd2?? { (7.49 → -7.84) Blunder. Qxc3 was best. } (25. Qxc3 Qxc3) 25... Nxd1 26. h6 Nxb2 27. Nd4 Nc4 28. Qe3 Na3 29. Rc1 Rb1+ 30. Rxb1 Nc2+ 31. Kb2 Nxe3 32. Kc1 Qd8 33. fxe3 f6 34. hxg7 Kxg7?? { (-7.84 → 7.29) Blunder. Be8 was best. } (34... Be8 35. Rb4) 35. Nxe6+ Kf7 36. Nxd8+ Ke7 37. Nb7 Bc6 38. g4 Bf3 39. a4 Bxg4 40. Rb4 h5 41. Nc5 f5 42. Nd3 h4 43. Nf2 Bf3 44. Rxh4 a5 45. e4 fxe4 46. Nxe4 Bxe4?! { (6.17 → 55.81) Inaccuracy. Kd8 was best. } (46... Kd8 47. Nd2 Be2 48. Nb3 Kc8 49. Kb2 Kb7 50. Nxa5+ Ka6 51. Nb3 Bd1 52. Rh8 Bg4 53. Rh6+) 47. Rxe4+ Kd6 48. Re2 Kc5 49. Rb2 Kc4 50. Kc2 Kc5 51. Kc3 Kc6 52. Kc4 Kc7 53. Kb5 Kb7 54. Kxa5+ Ka7 55. Kb5 Ka8 56. Kc6 Ka7 57. Rb6 Ka8 58. a5 Ka7 59. Kc7 Ka8 60. Ra6# { White wins by checkmate. } 1-0
Computer analysisMove timesCrosstableFEN & PGN
Reconnecting