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Puzzles (3 cohencoins award for each match):

Puzzle Ywdz4: 1276

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/ZIvryEDE"] [Date "2025.10.03"] [White "Benton"] [Black "Trekker"] [Result "1/2-1/2"] [UTCDate "2025.10.03"] [UTCTime "20:03:23"] [WhiteElo "1971"] [BlackElo "1843"] [WhiteRatingDiff "-3"] [BlackRatingDiff "+3"] [WhiteTitle "GM☾"] [BlackTitle "GM🎅"] [Variant "Standard"] [TimeControl "420+2"] [ECO "B02"] [Opening "Alekhine Defense: Two Pawn Attack"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 Nf6 2. e5 Nd5 3. c4 { B02 Alekhine Defense: Two Pawn Attack } Nb6 4. a4 a5 5. d4 d6 6. exd6 exd6 7. Nf3 Be7 8. Bf4 O-O 9. Nc3 Bg4?! { (-0.31 → 0.35) Inaccuracy. Re8 was best. } (9... Re8) 10. Bd3?! { (0.35 → -0.46) Inaccuracy. h3 was best. } (10. h3 Bh5 11. Be2 Nc6 12. O-O Bg6 13. b3 Bf6 14. Qd2 Re8 15. Rfe1 Nb4 16. Rac1 Nd7) 10... Bf6 11. d5?? { (-0.38 → -3.01) Blunder. O-O was best. } (11. O-O Nc6) 11... N8d7 12. O-O Nc5?! { (-2.33 → -1.48) Inaccuracy. Bxc3 was best. } (12... Bxc3) 13. h3 Bh5 14. Ra2?? { (-1.53 → -3.71) Blunder. Ne4 was best. } (14. Ne4 Bxb2) 14... Qd7?? { (-3.71 → -0.85) Blunder. Bxc3 was best. } (14... Bxc3 15. bxc3 Qf6 16. Bc1 Bxf3 17. gxf3 Nxd3 18. Qxd3 Nd7 19. Kg2 Rae8 20. Qd4 Ne5 21. Bf4) 15. Ne4? { (-0.85 → -1.96) Mistake. Nb5 was best. } (15. Nb5 Bxf3) 15... Nxd3?? { (-1.96 → 3.18) Blunder. Qf5 was best. } (15... Qf5) 16. Qxd3?? { (3.18 → 0.47) Blunder. Nxf6+ was best. } (16. Nxf6+ gxf6 17. Qxd3 Bxf3 18. Qxf3 Qf5 19. Ra3 Nxc4 20. Bh6 Qg6 21. Rc3 Qxh6 22. Rxc4 b5) 16... Bxf3? { (0.47 → 1.53) Mistake. Qf5 was best. } (16... Qf5 17. Bg5) 17. Qxf3 Nxc4?? { (1.22 → 13.76) Blunder. Qf5 was best. } (17... Qf5 18. Ng3) 18. Bh6?? { (13.76 → -1.74) Blunder. Nxf6+ was best. } (18. Nxf6+ Kh8 19. Nxd7 Rfe8 20. Qb3 Rad8 21. Nc5 dxc5 22. Qxc4 Rd7 23. Qxc5 Red8 24. Bxc7 Rxd5) 18... Be5 19. Bf4?! { (-1.31 → -2.05) Inaccuracy. Qb3 was best. } (19. Qb3 Nb6) 19... Qf5 20. Bxe5?! { (-1.67 → -2.62) Inaccuracy. Rc1 was best. } (20. Rc1 Nb6) 20... Qxf3 21. gxf3 Nxe5 22. Kg2?! { (-2.43 → -3.28) Inaccuracy. Ra3 was best. } (22. Ra3 Ng6) 22... h6 23. Rc1 Rfc8 24. b3 f5?! { (-3.00 → -1.83) Inaccuracy. Nd3 was best. } (24... Nd3 25. Rd1 Nb4 26. Rad2 Re8 27. Rd4 Re7 28. Rc4 Na6 29. Ng3 Kf8 30. h4 Nc5 31. Rg4) 25. Nc3?! { (-1.83 → -2.85) Inaccuracy. Ng3 was best. } (25. Ng3 g6 26. h4 Nd3 27. Rc4 c5 28. dxc6 Rxc6 29. h5 f4 30. Ne2 d5 31. Rxc6 bxc6) 25... Nd3 26. Rd1 Nb4 27. Re2 Re8 28. Rxe8+?! { (-2.57 → -3.37) Inaccuracy. Re3 was best. } (28. Re3 Rxe3 29. fxe3 Re8 30. Kf2 g5 31. h4 Kf7 32. hxg5 hxg5 33. Nb5 Re7 34. Nd4 Re5) 28... Rxe8 29. Nb5 Na6 30. Rc1 Re7 31. Nd4?! { (-3.14 → -4.71) Inaccuracy. h4 was best. } (31. h4 g6) 31... Re5 32. Ne6 Rxd5 33. Nxc7 Nxc7?? { (-5.37 → -1.18) Blunder. Rc5 was best. } (33... Rc5 34. Rxc5 Nxc5 35. Nb5 Nxb3 36. Nxd6 Nc5 37. Kg3 b6 38. Kf4 Nxa4 39. Kxf5 Nc5 40. Ke5) 34. Rxc7 b5 35. axb5 Rxb5 36. Rc3?? { (-1.31 → -3.77) Blunder. Ra7 was best. } (36. Ra7 d5) 36... Kf7 37. Rc7+?! { (-3.45 → -4.68) Inaccuracy. h4 was best. } (37. h4 Ke6 38. f4 Rb4 39. Kf3 h5 40. Ke3 Re4+ 41. Kf3 Kd5 42. Rd3+ Rd4 43. Rc3 Rb4) 37... Kf6 38. Rc6 Ke6 39. Ra6 Rxb3? { (-5.01 → -2.53) Mistake. Kd5 was best. } (39... Kd5) 40. Rxa5 d5 41. Ra6+?! { (-2.44 → -3.54) Inaccuracy. f4 was best. } (41. f4 Kd6 42. Ra7 d4 43. Rxg7 Kd5 44. Rh7 Rb6 45. Kf3 Re6 46. Rf7 d3 47. Rxf5+ Kc4) 41... Ke5 42. Ra7 d4 43. Rxg7 d3?? { (-2.73 → 0.00) Blunder. Kd5 was best. } (43... Kd5 44. Kf1 Kc4 45. Rg6 h5 46. Rc6+ Kd3 47. Rc5 f4 48. h4 Rc3 49. Rxh5 Kc2 50. Rd5) 44. Rd7 Ke6 45. Rd8 f4 46. h4 h5 47. Rd4 Rc3 48. Rxf4?! { (0.00 → -0.54) Inaccuracy. Kf1 was best. } (48. Kf1 Ke5 49. Rd8 Rc1+ 50. Kg2 Rd1 51. Rd7 Ke6 52. Rd8) 48... Ke5 49. Rf8? { (-0.61 → -2.13) Mistake. Re4+ was best. } (49. Re4+ Kd5) 49... Rc4 50. Re8+ Kd4 51. Rd8+?! { (-3.97 → -5.46) Inaccuracy. f4 was best. } (51. f4 Kc3 52. Kf3 d2 53. Rd8 Kc2 54. Ke2 Re4+ 55. Kf3 Re8 56. Rxe8 d1=Q+ 57. Kg2 Qg4+) 51... Kc3 52. Kf1 Rb4? { (-6.12 → -3.16) Mistake. Rxh4 was best. } (52... Rxh4) 53. Rc8+ Kd2 54. Rd8 Rb1+ 55. Kg2 Ke2? { (-3.80 → -2.25) Mistake. Rb4 was best. } (55... Rb4 56. Kf1 Rxh4 57. Rd5 Kc3 58. Rc5+ Kb4 59. Rg5 Rh1+ 60. Kg2 Rc1 61. Rxh5 d2 62. Rd5) 56. Re8+ Kd2? { (-2.43 → -1.03) Mistake. Kd1 was best. } (56... Kd1 57. f4 d2 58. f5 Rb6 59. Kf1 Rf6 60. Re5 Rc6 61. Rd5 Rc8 62. f6 Kc2 63. Ke2) 57. f4 Rb5?! { (-0.83 → -0.28) Inaccuracy. Rb6 was best. } (57... Rb6 58. Kf3) 58. Kf3? { (-0.28 → -1.56) Mistake. Re5 was best. } (58. Re5 Rb8) 58... Rc5?? { (-1.56 → 0.00) Blunder. Rd5 was best. } (58... Rd5 59. Ke4) 59. Ra8 Kc3 60. Ra3+?? { (0.00 → -2.72) Blunder. Rd8 was best. } (60. Rd8 Rc7 61. f5 d2 62. f6 Rc6 63. f7 Rf6+ 64. Ke2 Re6+ 65. Kf1 Rf6) 60... Kb2?? { (-2.72 → 7.30) Blunder. Kc2 was best. } (60... Kc2) 61. Rxd3 Rf5 62. Ke4 Rb5 63. Rd5 Rb4+ 64. Ke5 Rb3 65. Rd4 Rh3 66. f5 Rf3 67. Rf4 Rd3 68. f6 Ra3 69. f7 Ra5+ 70. Kd6 Ra6+ 71. Kc5 Ra5+ 72. Kb6 Ra8 73. f8=Q Rxf8 74. Rxf8 Kc2 75. f4 Kd3 76. Re8 Kd4?! { (64.40 → Mate in 9) Checkmate is now unavoidable. Kd4 was best. } (76... Kd4 77. Re5 Kd3 78. Rxh5 Ke4 79. Rc5 Kf3 80. h5 Kxf4 81. h6 Ke3 82. h7 Ke2 83. h8=Q) 77. f5 Kd5 78. f6 Kd6 79. f7 Kd7 80. f8=Q { Draw by stalemate. } 1/2-1/2
Computer analysisMove timesCrosstableFEN & PGN
Reconnecting