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Puzzles (3 cohencoins award for each match):

Puzzle bgB6U: 231

GM☾ Benton (2011) +4
FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/QW5yLAvc"] [Date "2026.02.13"] [White "Benton"] [Black "Trekker"] [Result "1-0"] [UTCDate "2026.02.13"] [UTCTime "21:02:55"] [WhiteElo "2011"] [BlackElo "1827"] [WhiteRatingDiff "+4"] [BlackRatingDiff "-5"] [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. Nf3 e6 6. Bb5 Nc6 7. Bxc6 bxc6 8. Bf4? { (-0.46 → -1.94) Mistake. O-O was best. } (8. O-O Be7 9. dxc5 Bxc5 10. Re1 O-O 11. Bg5 Be7 12. Bxe7 Qxe7 13. Ne2 c5 14. Qd2 Bb7) 8... cxd4 9. Nxd4 Qb6?! { (-1.98 → -1.05) Inaccuracy. c5 was best. } (9... c5) 10. Nb3?! { (-1.05 → -2.09) Inaccuracy. O-O was best. } (10. O-O c5 11. Nb3 Bb7 12. Re1 h6 13. Qg4 g5 14. Bd2 Be7 15. Na4 Qb5 16. Na5 h5) 10... Ba6 11. Qd4?! { (-2.05 → -2.87) Inaccuracy. h4 was best. } (11. h4 h5) 11... Bb4 12. Qxb6 axb6 13. a3 Bxc3+ 14. bxc3 f6 15. exf6 gxf6 16. Bg3 e5?! { (-2.81 → -1.70) Inaccuracy. h5 was best. } (16... h5 17. a4) 17. O-O-O?! { (-1.70 → -2.66) Inaccuracy. f4 was best. } (17. f4 h5) 17... O-O?! { (-2.66 → -1.78) Inaccuracy. Be2 was best. } (17... Be2 18. Rde1 Bc4 19. f4 e4 20. Nd4 c5 21. Nf5 b5 22. Rd1 Rxa3 23. Kd2 Kf7 24. Ra1) 18. Nd2?! { (-1.78 → -2.66) Inaccuracy. f4 was best. } (18. f4 Bc4) 18... e4?? { (-2.66 → 0.01) Blunder. Be2 was best. } (18... Be2) 19. Nxe4 f5?! { (0.06 → 0.89) Inaccuracy. Be2 was best. } (19... Be2 20. Rd4) 20. Ng5?! { (0.89 → 0.29) Inaccuracy. Nd6 was best. } (20. Nd6 f4) 20... f4 21. Bh4 Rfe8 22. Rhe1 h6?? { (0.85 → 2.76) Blunder. Be2 was best. } (22... Be2 23. Rd2) 23. Nf3?? { (2.76 → 0.00) Blunder. Ne6 was best. } (23. Ne6 Nc5) 23... Be2 24. Rxe2?! { (0.00 → -0.87) Inaccuracy. Rd4 was best. } (24. Rd4 Bxf3 25. Rxe8+ Rxe8 26. gxf3 Ne5 27. Rxf4 Nc4 28. Kd1 Nb2+ 29. Kc1) 24... Rxe2 25. Nd4 Re4 26. Nxc6?! { (-0.45 → -1.24) Inaccuracy. f3 was best. } (26. f3 Re5) 26... f3 27. g3 Rc8?? { (-1.68 → 4.00) Blunder. Rxa3 was best. } (27... Rxa3 28. Rxd5) 28. Ne7+ Rxe7 29. Bxe7 Kf7 30. Bb4 Nf6 31. Rd3 Re8 32. Rxf3 Re2 33. a4 Kg6 34. a5?! { (6.72 → 4.81) Inaccuracy. Rf4 was best. } (34. Rf4) 34... bxa5 35. Bxa5?! { (5.23 → 4.08) Inaccuracy. Kd1 was best. } (35. Kd1) 35... Ne4 36. Bb6?? { (4.32 → -0.52) Blunder. Re3 was best. } (36. Re3) 36... Nxc3?? { (-0.52 → 8.66) Blunder. Re1+ was best. } (36... Re1+ 37. Kb2) 37. Rxc3 Re1+ 38. Kd2 Rh1 39. h4 Rb1 40. Be3 Rb4 41. Rc6+ Kh5? { (9.51 → Mate in 4) Checkmate is now unavoidable. Kf5 was best. } (41... Kf5 42. Kd3 Kg4 43. Rxh6 Rb7 44. Rf6 d4 45. Bxd4 Rd7 46. Rf4+ Kh5 47. Rf5+ Kg4 48. Rg5+) 42. Rxh6+? { (Mate in 4 → 9.37) Lost forced checkmate sequence. f3 was best. } (42. f3 Rd4+ 43. Ke2 Rf4 44. Bxf4 d4 45. Rxh6#) 42... Kg4 43. Rf6 d4 44. Rf4+ Kh3 45. Rxd4 Rb5 46. Ke2 Rh5 47. c4 Rc5 48. Kd3 Rh5 49. Rd5 Rh6?! { (10.34 → Mate in 10) Checkmate is now unavoidable. Rh8 was best. } (49... Rh8 50. c5) 50. Bxh6 Kg2 51. c5 Kf3 52. Rf5+ Kg4 53. Rf4+ Kh3 54. c6 Kg2 55. c7 Kh2 56. Re4 Kg2 57. f4 Kf3 58. c8=Q Kg2 59. Re2+ Kf3 60. Qc6+ Kxg3 61. Qg6+ Kf3 62. Qe4+ Kg3 63. Qg2+ Kxh4 64. Bg5+ Kh5 65. Qh3+ Kg6 66. Re6+ Kf7 67. Qf5+ Kg7 68. Re7+ Kg8 69. Qh7+ Kf8 70. Qf7# { White wins by checkmate. } 1-0
Computer analysisMove timesCrosstableFEN & PGN
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