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Puzzles (3 cohencoins award for each match):

Puzzle i0tDE: 528

FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/hsxyhNWr"] [Date "2026.03.17"] [White "Caroline1"] [Black "Vincent3"] [Result "1-0"] [UTCDate "2026.03.17"] [UTCTime "14:32:40"] [WhiteElo "1217"] [BlackElo "1329"] [WhiteRatingDiff "+12"] [BlackRatingDiff "-32"] [WhiteTitle "IM"] [BlackTitle "IM"] [Variant "Standard"] [TimeControl "420+2"] [ECO "C46"] [Opening "Four Knights Game: Italian Variation"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bc4?! { (0.33 → -0.23) Inaccuracy. Bb5 was best. } { C46 Four Knights Game: Italian Variation } (4. Bb5 Bb4 5. O-O O-O 6. d3 Re8 7. Bg5 Bxc3 8. bxc3 d6 9. Bh4 Bd7 10. Nd2 h6) 4... Bb4?! { (-0.23 → 0.64) Inaccuracy. Nxe4 was best. } (4... Nxe4) 5. Ng5? { (0.64 → -0.78) Mistake. Nd5 was best. } (5. Nd5 Nxe4 6. O-O Nf6 7. Nxb4 Nxb4 8. Nxe5 O-O 9. d3 d6 10. Bd2 Nbd5 11. Nf3 Re8) 5... Bxc3?? { (-0.78 → 1.56) Blunder. O-O was best. } (5... O-O) 6. Nxf7 Qe7 7. Nxh8 Qc5?? { (1.38 → 8.36) Blunder. Bd4 was best. } (7... Bd4 8. d3) 8. dxc3?? { (8.36 → -1.99) Blunder. Bf7+ was best. } (8. Bf7+ Ke7 9. dxc3 d6 10. Qd3 Nd8 11. Be3 Qa5 12. b4 Qa6 13. Qxa6 bxa6 14. Bb3 Ne6) 8... Qxc4 9. Bg5?! { (-2.48 → -3.66) Inaccuracy. Bg5 was best. } (9. Bg5 Qxe4+) 9... Qxe4+ 10. Kf1 Qc4+ 11. Ke1 h6?? { (-4.13 → 5.45) Blunder. Qg8 was best. } (11... Qg8 12. f4) 12. Bxf6 gxf6 13. Qd2?? { (5.38 → 0.82) Blunder. Qh5+ was best. } (13. Qh5+) 13... d6 14. Rd1?? { (1.12 → -6.12) Blunder. Qxh6 was best. } (14. Qxh6) 14... Ke7?? { (-6.12 → 2.04) Blunder. Qe4+ was best. } (14... Qe4+) 15. Ng6+?? { (2.04 → -4.90) Blunder. Qxh6 was best. } (15. Qxh6 Bf5) 15... Ke6?? { (-4.90 → 4.68) Blunder. Kf7 was best. } (15... Kf7) 16. b3?? { (4.68 → -5.94) Blunder. Qxh6 was best. } (16. Qxh6 Kf7) 16... Qe4+ 17. Kf1 Qxg6 18. Qd5+ Kf5?? { (-8.38 → -2.31) Blunder. Ke7 was best. } (18... Ke7 19. Rd3 Be6 20. Qxe6+ Kxe6 21. g3 Qf5 22. Rg1 e4 23. Re3 Ne5 24. Rg2 a5 25. h4) 19. Qd3+? { (-2.31 → -3.77) Mistake. Rd3 was best. } (19. Rd3 Qe8) 19... Kg5 20. Qxg6+?? { (-3.27 → -8.18) Blunder. Qe3+ was best. } (20. Qe3+ Kh5 21. Rd3 Qf7 22. Qe4 d5 23. Rxd5 f5 24. Qe2+ Kg6 25. Rd2 Be6 26. Ke1 Kh7) 20... Kxg6 21. Ke2 Bf5 22. Rc1 d5 23. Rhd1 Ne7 24. Kf1 e4 25. Re1 Rd8 26. f3 d4?? { (-6.43 → -1.44) Blunder. Nc6 was best. } (26... Nc6) 27. fxe4 dxc3?? { (-1.25 → 5.13) Blunder. Bg4 was best. } (27... Bg4 28. h3) 28. exf5+ Kxf5?! { (5.06 → 8.40) Inaccuracy. Nxf5 was best. } (28... Nxf5 29. g4) 29. Rxe7 Rc8 30. h3 Kf4 31. Rce1 Kg3? { (8.71 → Mate in 8) Checkmate is now unavoidable. Rd8 was best. } (31... Rd8 32. h4 h5 33. Kg1 Kf5 34. Rf1+ Kg6 35. Re6 Rd6 36. Rfxf6+ Kg7 37. Rxd6 cxd6 38. Rxd6) 32. R1e3+ Kh2 33. h4 Rd8 34. Re1? { (Mate in 1 → 8.67) Lost forced checkmate sequence. Rh3# was best. } (34. Rh3#) 34... Rd2 35. Rg7 Rxc2 36. Re2 Rxe2 37. Kxe2 Kg1 38. Kd3 b6 39. Kxc3 a5 40. g4 Kg2 41. h5 Kg3 42. g5 fxg5 43. Rh7 Kg4 44. Rxh6 Kf5 45. Rh7 g4 46. h6 Kf4 47. Rg7 g3?! { (11.10 → Mate in 11) Checkmate is now unavoidable. g3 was best. } (47... g3 48. h7) 48. h7?! { (Mate in 11 → 10.92) Lost forced checkmate sequence. h7 was best. } (48. h7 a4 49. bxa4 b5 50. h8=Q Ke3 51. Re7+ Kf2 52. Rf7+ Kg1 53. Qe5 b4+ 54. Kd3 Kh2) 48... Kf3?! { (10.92 → Mate in 6) Checkmate is now unavoidable. g2 was best. } (48... g2 49. Rxg2 Kf5 50. Kd4 Ke6 51. Rf2 c6 52. Kc4 a4 53. bxa4 b5+ 54. Kc5 bxa4 55. Kxc6) 49. h8=Q g2 50. Rf7+ Kg3 51. Qg8+ Kh2 52. Rh7+ Kg1 53. Rg7 Kf2 54. Rxg2+ Ke3 55. Qg3+ Ke4 56. Qh4+ Kd5 57. Rg5+ Kc6 58. Qh6+ Kb7 59. Rg7 a4 60. bxa4 b5 61. axb5 Kc8 62. Qh8+ Kb7 63. Qh7 Kb6 64. Rxc7 Kxb5 65. Rg7 Ka4 66. Qh4+ Ka3 67. Kc4 Kxa2 68. Rg2+ Kb1 69. Qh1# { White wins by checkmate. } 1-0
Computer analysisMove timesCrosstableFEN & PGN
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