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Puzzles (3 cohencoins award for each match):

Puzzle 4qlUj: 313

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/71qhSEMS"] [Date "2025.10.17"] [White "LEO2"] [Black "Eitan1"] [Result "1-0"] [UTCDate "2025.10.17"] [UTCTime "23:37:47"] [WhiteElo "1407"] [BlackElo "1146"] [WhiteRatingDiff "+5"] [BlackRatingDiff "-4"] [WhiteTitle "GM"] [Variant "Standard"] [TimeControl "420+2"] [ECO "C44"] [Opening "Scotch Game: Lolli Variation"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 e5 2. Nf3 Nc6 3. d4 Nxd4?! { (0.30 → 0.86) Inaccuracy. exd4 was best. } { C44 Scotch Game: Lolli Variation } (3... exd4) 4. Nxd4 exd4 5. Qxd4 b6? { (0.81 → 2.08) Mistake. Qf6 was best. } (5... Qf6 6. Qe3 Bb4+ 7. c3 Ba5 8. Qg3 d6 9. Bd3 Ne7 10. Bg5 Qg6 11. Nd2 Bb6 12. a4) 6. Qc4? { (2.08 → 0.87) Mistake. Nc3 was best. } (6. Nc3 Bb7 7. Bf4 Nf6 8. f3 Bc5 9. Qe5+ Kf8 10. O-O-O d6 11. Qf5 Qe7 12. Kb1 a6) 6... c6 7. h4?! { (1.09 → 0.24) Inaccuracy. Nc3 was best. } (7. Nc3 Bc5 8. Qe2 Ne7 9. Bg5 O-O 10. O-O-O Qc7 11. Qd2 Ng6 12. h4 h5 13. Be3 Bxe3) 7... d5?? { (0.24 → 3.03) Blunder. Bc5 was best. } (7... Bc5 8. Qe2) 8. exd5?? { (3.03 → 0.99) Blunder. Qxc6+ was best. } (8. Qxc6+ Bd7 9. Qxd5 Nf6 10. Qe5+ Be7 11. Bg5 Rc8 12. Nc3 O-O 13. O-O-O h6 14. Bxf6 Bxf6) 8... cxd5 9. Qf4 f6? { (0.41 → 1.54) Mistake. Nf6 was best. } (9... Nf6 10. Bb5+ Bd7 11. Nc3 Bc5 12. Be3 O-O 13. O-O-O Re8 14. Bxd7 Qxd7 15. Rd3 Bxe3+ 16. Rxe3) 10. Bb5+ Bd7 11. Qe3+?! { (1.43 → 0.44) Inaccuracy. Nc3 was best. } (11. Nc3 Bxb5) 11... Be7?! { (0.44 → 1.24) Inaccuracy. Kf7 was best. } (11... Kf7) 12. Bxd7+?! { (1.24 → 0.43) Inaccuracy. Nc3 was best. } (12. Nc3 Bxb5) 12... Qxd7 13. Nc3 d4 14. Qe4 dxc3?? { (0.00 → 7.38) Blunder. Rd8 was best. } (14... Rd8 15. Ne2) 15. Qxa8+ Qd8 16. Qc6+ Qd7 17. Qxd7+ Kxd7 18. bxc3 b5 19. O-O Nh6 20. Bxh6 gxh6 21. Rfe1 Re8 22. Rad1+ Kc7 23. Re2 f5 24. Red2 Bc5 25. Rd7+ Kc8 26. Rxh7 Re2 27. Rf1 Rxc2 28. Rxh6 Rxc3 29. Rd1 Rb3?! { (5.86 → 13.46) Inaccuracy. Rc2 was best. } (29... Rc2 30. Kh2 Bxf2 31. h5 Be3 32. Rh8+ Kc7 33. h6 Bf4+ 34. Kh1 Rc6 35. h7 Be5 36. Rf8) 30. Rh8+ Kb7 31. Re1? { (12.20 → 4.21) Mistake. axb3 was best. } (31. axb3) 31... Ka6? { (4.21 → 11.64) Mistake. Rb2 was best. } (31... Rb2) 32. Rh6+ Bb6 33. axb3 Ka5 34. Ra1+ Kb4 35. Rb1 Ka3 36. Re6 Kb4 37. g4 fxg4 38. Re4+ Kc3 39. b4 Kd3 40. Rxg4 Kc2 41. Ra1 Be3?! { (13.42 → Mate in 9) Checkmate is now unavoidable. Kd2 was best. } (41... Kd2 42. Kg2) 42. Ra2+?! { (Mate in 9 → 13.78) Lost forced checkmate sequence. fxe3 was best. } (42. fxe3 Kb2 43. Rxa7 Kc3 44. h5 Kc2 45. h6 Kc3 46. h7 Kb2 47. h8=Q+ Kb3 48. Ra5 Kc2) 42... Kb3 43. Rxa7 Kc3? { (9.34 → Mate in 6) Checkmate is now unavoidable. Bxa7 was best. } (43... Bxa7 44. h5 Kc3 45. h6 Bd4 46. h7 Bf6 47. Kh2 Bh8 48. Kh3 Kb3 49. Re4 Kc3 50. f4) 44. Rg3?! { (Mate in 6 → 75.07) Lost forced checkmate sequence. Ra3+ was best. } (44. Ra3+ Kc2 45. Rxe3 Kd1 46. Rg2 Kd2 47. Kf1 Kd1 48. f4 Kc1 49. Re1#) 44... Kd2?! { (75.07 → Mate in 4) Checkmate is now unavoidable. Kc4 was best. } (44... Kc4 45. Rxe3 Kd5 46. Rb7 Kc6 47. Rb8 Kd5 48. Rxb5+ Kd4 49. Ree5 Kc4 50. h5 Kb3 51. h6) 45. Rxe3 Kd1 46. Rd7+ Kc1 47. Rc3+ Kb1 48. Rdc7 Kb2 49. Rc2+ Kb3 50. R7c3+ Kxb4 51. Re3 Ka5 52. h5 Kb6 53. h6 Kb7 54. h7 Kb8 55. h8=Q+ Ka7 56. Re6 Kb7 57. Rd2 Kc7 58. Qh7+ Kc8 59. Ra2 Kb8 60. Re8# { White wins by checkmate. } 1-0
Computer analysisMove timesCrosstableFEN & PGN
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