chessdox

Public replay · 0-1

Chess game: Black mates in 90 moves

A chess game: Chessdox Computer vs Player, beginner level. Black mates with the queen after 90 moves with 28 captures and 45 checks. Replay every move.

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Position after 90... Qc8#Chess960 · start position 666

Game summary

Chess game — how the game went

Chessdox Computer (White) and Player (Black) played this beginner-level game from a custom starting position, beginning 1. Nf3 Nf6 2. Na3 e6.

Neither king castled. Over 90 moves the game saw 28 captures, 45 checks and 2 pawn promotions.

Black delivered checkmate with the queen on 90... Qc8#. At the end White had 0 points of material and Black 12 points, counting pawns as 1, knights and bishops as 3, rooks as 5 and queens as 9.

Final position after 90 moves, black won (0-1). FEN: 2q1K3/8/4kb2/8/8/8/8/8 w - - 22 91
Final position · 0-1

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[Event "Chessdox public replay"]
[Site "https://chessdox.com/games/beginner-replay-from-1-nf3-black-wins-in-90-move-7e5b8c6419e1fd5aa402"]
[Date "2026.11.02"]
[Round "-"]
[White "Chessdox Computer"]
[Black "Player"]
[Result "0-1"]
[Variant "Chess960"]
[SetUp "1"]
[FEN "rnkrbbnq/pppppppp/8/8/8/8/PPPPPPPP/RNKRBBNQ w KQkq - 0 1"]
[TimeControl "-"]
[Termination "normal"]
[PlyCount "180"]

1. Nf3 Nf6 2. Na3 e6 3. Nb5 c6 4. a4 cxb5 5. axb5 b6 6. d3 d5 7. Ng5 Nbd7 8. f4
Ng4 9. h4 h6 10. Nf3 Ne3 11. g4 Nxd1 12. Kxd1 Kb8 13. b4 g5 14. Ra4 Qb2 15. hxg5
hxg5 16. e3 gxf4 17. exf4 Rc8 18. Nd4 Bg7 19. Nc6+ Kb7 20. Be2 Nf6 21. f5 Bxc6
22. bxc6+ Rxc6 23. Ra2 Qxa2 24. c4 Qa1+ 25. Kd2 dxc4 26. dxc4 Rd8+ 27. Bd3 Qa2+
28. Ke3 Nxg4+ 29. Kf4 Rd4+ 30. Kg3 Nh6 31. Qf1 Rxd3+ 32. Qxd3 Qxc4 33. Qd7+ Rc7
34. Qd8 Nxf5+ 35. Kf2 Bd4+ 36. Kf3 Qd3+ 37. Kg4 Ne3+ 38. Kh5 Rc5+ 39. bxc5 bxc5
40. Qd7+ Kb6 41. Bg3 c4 42. Qxf7 c3 43. Qxe6+ Kb5 44. Qd7+ Kc4 45. Qa4+ Kd5 46.
Qa2+ Ke4 47. Qa4 c2 48. Qe8+ Kf3 49. Qa8+ Kxg3 50. Qb8+ Kf2 51. Qh2+ Kf3 52.
Qh3+ Ke4 53. Qe6+ Kf3 54. Qc8 Qd2 55. Qc6+ Ke2 56. Qb5+ Ke1 57. Qc6 c1=Q 58.
Qh1+ Ke2 59. Qb7 Qc5+ 60. Kh6 Qda5 61. Qh1 Qa6+ 62. Kh7 Qb7+ 63. Qxb7 Nf5 64.
Qe4+ Kd2 65. Qf4+ Kd3 66. Kg8 Kc4 67. Qf1+ Kd5 68. Qxf5+ Kc6 69. Qg6+ Kb5 70.
Qe4 a6 71. Qe6 a5 72. Qg6 a4 73. Qe4 a3 74. Qf5 a2 75. Qd7+ Kb4 76. Qb7+ Kc4 77.
Qf7+ Qd5 78. Qxd5+ Kxd5 79. Kf7 a1=Q 80. Ke7 Qa7+ 81. Kd8 Kd6 82. Ke8 Qb8+ 83.
Kf7 Ke5 84. Kg7 Kf5+ 85. Kf7 Qb7+ 86. Ke8 Ke6 87. Kd8 Kd6 88. Ke8 Bf6 89. Kf8
Ke6 90. Ke8 Qc8# 0-1