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Puzzles (3 cohencoins award for each match):

Puzzle 4UkdG: 344

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/A8zIYgXz"] [Date "2026.02.24"] [White "ChessMasterPlayer"] [Black "Cora"] [Result "1/2-1/2"] [UTCDate "2026.02.24"] [UTCTime "15:50:25"] [WhiteElo "1511"] [BlackElo "1422"] [WhiteRatingDiff "-2"] [BlackRatingDiff "+4"] [WhiteTitle "GM"] [BlackTitle "๐Ÿงถ"] [Variant "Standard"] [TimeControl "420+2"] [ECO "D02"] [Opening "Queen's Pawn Game: London System"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. d4 d5 2. Nf3 Nf6 3. Bf4 { D02 Queen's Pawn Game: London System } Nc6 4. e3 Bf5 5. Nc3?! { (0.96 โ†’ 0.25) Inaccuracy. Bb5 was best. } (5. Bb5 Nd7 6. c4 dxc4 7. O-O Bd3 8. Re1 a6 9. Bxc6 bxc6 10. Nbd2 e6 11. Rc1 Bb4) 5... e6 6. Bd3 Bxd3 7. Qxd3 Bd6 8. Bxd6 Qxd6 9. O-O O-O-O 10. Ng5 Qe7 11. f3?! { (0.00 โ†’ -0.68) Inaccuracy. f4 was best. } (11. f4 Ne8 12. Nf3 Nd6 13. a3 Qd7 14. Ne5 Qe8 15. Nf3) 11... Nb4 12. Qd2 Nc6 13. f4 Ng4 14. Nf3 Na5 15. Ne5 Nxe5 16. fxe5 Nc4 17. Qf2 Nxb2 18. Rab1?! { (-0.01 โ†’ -0.95) Inaccuracy. Qxf7 was best. } (18. Qxf7) 18... Nc4 19. Qxf7 Qxf7? { (-1.27 โ†’ 0.00) Mistake. Rhe8 was best. } (19... Rhe8 20. Qxe7) 20. Rxf7?! { (0.00 โ†’ -0.54) Inaccuracy. Rxf7 was best. } (20. Rxf7 Rd7 21. Rxd7 Kxd7 22. Rxb7 Nxe3 23. Rxa7 Nxc2 24. Nb5 Rc8 25. a4 Nb4 26. Nd6 Rb8) 20... Rhg8?? { (-0.54 โ†’ 1.24) Blunder. Rd7 was best. } (20... Rd7 21. Rxd7) 21. e4?! { (1.24 โ†’ 0.39) Inaccuracy. Nb5 was best. } (21. Nb5) 21... dxe4 22. Nxe4? { (0.86 โ†’ -0.55) Mistake. Nb5 was best. } (22. Nb5 Rd7) 22... Na3?? { (-0.55 โ†’ 1.29) Blunder. Rxd4 was best. } (22... Rxd4) 23. Rb2? { (1.29 โ†’ 0.00) Mistake. Rbf1 was best. } (23. Rbf1) 23... Nc4 24. Rb4? { (0.00 โ†’ -1.16) Mistake. Rb5 was best. } (24. Rb5 Rxd4 25. Rc5 Rxe4 26. Rcxc7+ Kd8 27. Rfd7+ Ke8 28. Re7+ Kd8) 24... Na3?? { (-1.16 โ†’ 5.57) Blunder. Rxd4 was best. } (24... Rxd4 25. Nc5 Rd1+ 26. Rf1 Rxf1+ 27. Kxf1 Nxe5 28. Rxb7 Nc6 29. Rb2 Rf8+ 30. Kg1 e5 31. c3) 25. c4?? { (5.57 โ†’ 0.00) Blunder. Nd6+ was best. } (25. Nd6+ cxd6) 25... Nc2 26. Rb2 Nxd4 27. Nc5?? { (0.39 โ†’ -3.66) Blunder. Nd6+ was best. } (27. Nd6+ cxd6 28. Rbxb7 Rdf8 29. Rfc7+ Kd8 30. Rd7+ Kc8 31. h3 dxe5 32. Rdc7+ Kd8 33. Rxa7 Ne2+) 27... Nf5?? { (-3.66 โ†’ Mate in 10) Checkmate is now unavoidable. b6 was best. } (27... b6 28. Na6) 28. Rxb7 Rd1+ 29. Kf2 Nh6 30. Rfxc7+ Kd8 31. Rd7+?? { (Mate in 2 โ†’ 6.19) Lost forced checkmate sequence. Nxe6+ was best. } (31. Nxe6+ Ke8 32. Re7#) 31... Rxd7 32. Rxd7+ Ke8 33. Rxa7 Rf8+ 34. Ke3 Nf5+ 35. Ke4 Nh4 36. Nxe6 Rf7 37. Rxf7 Kxf7 38. Ng5+ Kg6 39. Kf4?! { (9.47 โ†’ 6.33) Inaccuracy. Nf3 was best. } (39. Nf3 Nf5) 39... Nxg2+ 40. Kg4?! { (6.46 โ†’ 4.84) Inaccuracy. Kf3 was best. } (40. Kf3) 40... Ne3+ 41. Kf4 Nxc4 42. e6? { (5.40 โ†’ 3.29) Mistake. a4 was best. } (42. a4 Nb6) 42... Nd6?? { (3.29 โ†’ 6.95) Blunder. Kf6 was best. } (42... Kf6 43. Nxh7+ Kxe6 44. Ng5+ Kf6 45. a4 Nb2 46. a5 Nd3+ 47. Kg4 Nb4 48. Ne4+ Ke5 49. Ng3) 43. e7? { (6.95 โ†’ 3.78) Mistake. Ke5 was best. } (43. Ke5 Nc4+ 44. Kd4 Na3 45. Ne4 h5 46. Ke5 Nc4+ 47. Kd5 Ne3+ 48. Kd6 Nc4+ 49. Kc5 Nb2) 43... Kf6?! { (3.78 โ†’ 5.20) Inaccuracy. Kf6 was best. } (43... Kf6 44. Nxh7+) 44. Nxh7+?! { (5.20 โ†’ 3.85) Inaccuracy. Ne4+ was best. } (44. Ne4+) 44... Kxe7 45. a4 Kf7?! { (3.58 โ†’ 4.53) Inaccuracy. Nc4 was best. } (45... Nc4 46. Kf5) 46. Ng5+ Kf6? { (4.17 โ†’ 11.96) Mistake. Ke8 was best. } (46... Ke8 47. Ne4) 47. h4?? { (11.96 โ†’ 3.38) Blunder. Ne4+ was best. } (47. Ne4+) 47... Kg6? { (3.38 โ†’ 5.35) Mistake. Nb7 was best. } (47... Nb7 48. h5 Na5 49. Ne4+ Ke6 50. Kg5 Kf7 51. Kf5 Nc4 52. Ng5+ Kf8 53. Ke4 Ke7 54. Kd4) 48. Kg4? { (5.35 โ†’ 3.35) Mistake. a5 was best. } (48. a5) 48... Kh6? { (3.35 โ†’ 5.57) Mistake. Nc4 was best. } (48... Nc4 49. h5+ Kh6 50. Nf7+ Kh7 51. Kg5 Na5 52. Nd8 Nb3 53. Nc6 Nc5 54. a5 Ne6+ 55. Kf5) 49. h5?? { (5.57 โ†’ 0.18) Blunder. a5 was best. } (49. a5 Nb5 50. a6 Kg6 51. Ne6 Kf6 52. Nd4 Na7 53. Kf4 g6 54. Ke4 Ke7 55. Kd5 Kd7) 49... Nb7?? { (0.18 โ†’ 4.53) Blunder. g6 was best. } (49... g6 50. Kf4 gxh5 51. Nf3 Kg6 52. Ke5 Nc4+ 53. Kd4 Na5 54. Kc5 Kf5 55. Kb5 Nb7 56. Kb6) 50. Nf7+ Kh7 51. Kg5 Nc5 52. a5 Kg8 53. Kg6 Nd7 54. a6 Nf8+ 55. Kg5?? { (6.91 โ†’ 0.00) Blunder. Kf5 was best. } (55. Kf5) 55... Kxf7 56. a7 Ne6+ 57. Kf5 Nc7 58. Kg5 Kg8 59. h6 gxh6+ 60. Kxh6 Kf8 61. Kg6 Ke8 62. Kf6 Kd8 63. Ke5 Kc8 64. Kd6 Kb7 65. Kd7 Kxa7 { The game is a draw. } 1/2-1/2
Computer analysisMove timesCrosstableFEN & PGN
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