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Puzzles (3 cohencoins award for each match):

Puzzle ZnNm6: 629

IM Vincent3 (1306) +4
FEN
[Event " MrCohenOS Arena"] [Site "https://cohenchessclub.com/G1FLcN06"] [Date "2026.04.28"] [White "Blaze"] [Black "Vincent3"] [Result "0-1"] [UTCDate "2026.04.28"] [UTCTime "14:25:34"] [WhiteElo "999"] [BlackElo "1306"] [WhiteRatingDiff "-6"] [BlackRatingDiff "+4"] [BlackTitle "IM"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A00"] [Opening "Hungarian Opening"] [Termination "Normal"] [Annotator "cohenchessclub.com"] 1. g3 { A00 Hungarian Opening } e5 2. h4?? { (0.34 → -1.19) Blunder. c4 was best. } (2. c4 Nf6 3. Bg2 c6 4. d4 exd4 5. Qxd4 Na6 6. Nc3 Bc5 7. Qe5+ Qe7 8. Qxe7+ Bxe7) 2... Nc6?! { (-1.19 → -0.59) Inaccuracy. d5 was best. } (2... d5 3. Bg2) 3. Nf3 Nf6 4. Bh3? { (-0.89 → -2.14) Mistake. d4 was best. } (4. d4 e4) 4... d5?! { (-2.14 → -1.54) Inaccuracy. e4 was best. } (4... e4) 5. O-O?? { (-1.54 → -9.71) Blunder. Bxc8 was best. } (5. Bxc8 Qxc8) 5... Bxh3 6. Re1 e4 7. d3 exf3 8. exf3+ Be7 9. Re2 Nd4 10. Re3 Bg4 11. Qe1 Nxf3+ 12. Kg2 Nxe1+ 13. Rxe1 d4 14. Re5 Qd6 15. Re3 Qd5+ 16. f3?! { (-23.00 → Mate in 5) Checkmate is now unavoidable. Re4 was best. } (16. Re4 Nxe4) 16... Bxf3+?! { (Mate in 5 → -14.38) Lost forced checkmate sequence. dxe3 was best. } (16... dxe3 17. Nd2 exd2 18. Bxd2 Qxf3+ 19. Kg1 Bh3 20. d4 Qg2#) 17. Rxf3 O-O-O 18. Bf4 Bd6 19. b3 Bxf4 20. gxf4 Rde8 21. Na3?! { (-16.62 → Mate in 4) Checkmate is now unavoidable. Nd2 was best. } (21. Nd2 Re2+) 21... Re2+ 22. Kg3 Nh5+ 23. Kg4 Rg2+ 24. Rg3 Qf3+? { (Mate in 1 → -9.86) Lost forced checkmate sequence. Rxg3# was best. } (24... Rxg3#) 25. Kxf3 Rxg3+ 26. Ke4?! { (-10.46 → Mate in 8) Checkmate is now unavoidable. Kf2 was best. } (26. Kf2 Re8 27. Rg1 Rge3 28. Nc4 Re2+ 29. Kf3 f5 30. c3 Rh2 31. Rg5 Rh3+ 32. Kf2 Nxf4) 26... Re8+? { (Mate in 8 → -9.46) Lost forced checkmate sequence. Rd8 was best. } (26... Rd8 27. Nc4 Nf6+ 28. Kf5 Rd5+ 29. Ne5 Rd6 30. Re1 g6+ 31. Nxg6 hxg6+ 32. Ke5 Ng4+ 33. Ke4) 27. Kxd4 c5+ 28. Kxc5 Rg4 29. Kd6 Rxf4 30. Rg1?! { (-10.04 → Mate in 3) Checkmate is now unavoidable. d4 was best. } (30. d4 Rf5) 30... g6?! { (Mate in 3 → -10.26) Lost forced checkmate sequence. Rf5 was best. } (30... Rf5 31. Re1 Rxe1 32. d4 Re6#) 31. Rg5 Nf6 32. Kc5 b6+ 33. Kb5 Re6 34. Ka6 h6 35. Rg3 b5+ 36. Kxa7?! { (-10.82 → Mate in 4) Checkmate is now unavoidable. Kxb5 was best. } (36. Kxb5 Nh5) 36... b4?! { (Mate in 4 → -14.57) Lost forced checkmate sequence. Rd4 was best. } (36... Rd4 37. Nxb5 Rd7+ 38. Nc7 Rxc7+ 39. Ka8 Ra6#) 37. Nc4 Rxc4 38. bxc4 g5 39. d4 Ne4 40. Rf3 Nc3? { (-6.85 → -4.13) Mistake. Re7+ was best. } (40... Re7+ 41. Kb6 g4 42. Rf4 g3 43. Rg4 Re6+ 44. Kb5 Nc3+ 45. Kxb4 Rg6 46. Rxg3 Rxg3 47. a4) 41. d5?! { (-4.13 → -6.05) Inaccuracy. Rxf7 was best. } (41. Rxf7 gxh4) 41... Re4 42. Rxf7 Rxc4 43. d6?! { (-5.09 → -6.74) Inaccuracy. hxg5 was best. } (43. hxg5 hxg5 44. d6 Nb5+ 45. Kb6 Nxd6 46. Rg7 g4 47. Ka5 Ne8 48. Rg8 Kd7 49. Ka4 Nf6) 43... Nb5+ 44. Kb6 Rc5?? { (-5.75 → 55.99) Blunder. Nxd6 was best. } (44... Nxd6 45. Rf6) 45. d7+ Kd8 46. Rf8+?! { (16.38 → 6.31) Inaccuracy. Kxc5 was best. } (46. Kxc5 Nd4 47. hxg5 Kc7 48. Kxd4 h5 49. Ke5 h4 50. g6 b3 51. axb3) 46... Kxd7 47. Kxc5 b3 48. Kxb5 bxa2 49. c4?? { (9.39 → -7.13) Blunder. Ra8 was best. } (49. Ra8) 49... a1=Q 50. c5 Qb2+ 51. Kc4 Qg7 52. Rd8+ Kxd8 53. c6 Qf6 54. Kc5 gxh4 55. Kb6 h3 56. Kb7 Qxc6+ 57. Kxc6 h2 58. Kd5 h1=Q+ 59. Ke6 h5 60. Kf5 Qg2 61. Kf4 h4 62. Ke3 h3 63. Kf4 h2 64. Ke3 h1=Q 65. Kf4 Qhf1+ 66. Ke3 Qge2+ 67. Kd4 Qfd1+?? { (Mate in 2) Lost forced checkmate sequence. Qc4+ was best. } (67... Qc4+ 68. Ke3 Qfe2#) 68. Kc3 Qec2+ 69. Kb4 Qdb1+ 70. Ka5 Qca2# { Black wins by checkmate. } 0-1
Computer analysisMove timesCrosstableFEN & PGN
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