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Public replay · 1-0 · ECO B00

Hippopotamus Defense: White mates in 40 moves

King's Pawn Opening (B00): Player vs Chessdox Computer, beginner level. White mates with the queen after 40 moves with 22 captures and 6 checks.

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Position after 40. Qb7#B00 Hippopotamus Defense

Game summary

Hippopotamus Defense — how the game went

Player (White) and Chessdox Computer (Black) played this beginner-level game. It opened with the King's Pawn Opening, classified as ECO B00, after 1. e4.

White castled kingside, while Black's king never castled. Over 40 moves the game saw 22 captures, 6 checks.

White delivered checkmate with the queen on 40. Qb7#. At the end White had 14 points of material and Black 2 points, counting pawns as 1, knights and bishops as 3, rooks as 5 and queens as 9.

Final position after 40 moves, white won (1-0). FEN: 1k6/1Q6/2P5/p7/7p/6P1/P4P1P/6K1 b - - 4 40
Final position · 1-0

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[Event "Chessdox public replay"]
[Site "https://chessdox.com/games/beginner-replay-from-1-e4-white-wins-in-40-moves-73599a55064411643389"]
[Date "2026.07.27"]
[Round "-"]
[White "Player"]
[Black "Chessdox Computer"]
[Result "1-0"]
[TimeControl "-"]
[ECO "B00"]
[Opening "Hippopotamus Defense"]
[Termination "normal"]
[PlyCount "79"]

1. e4 Nh6 2. d3 Na6 3. Bxh6 gxh6 4. Nf3 Nb4 5. c3 Na6 6. Be2 Rg8 7. g3 d6 8. Nh4
Nc5 9. Nf5 d5 10. Nd2 a5 11. O-O b5 12. Bh5 Bxf5 13. exf5 Nxd3 14. Qf3 Ne5 15.
Qe2 Nc4 16. Nxc4 dxc4 17. Rad1 Qc8 18. f6 c5 19. Qe4 Ra6 20. Qxh7 Rxf6 21. Qxg8
Qf5 22. Bg4 Qd3 23. Rxd3 cxd3 24. Rd1 Rd6 25. Bh5 Rf6 26. Rxd3 b4 27. Bxf7+ Rxf7
28. Rd8+ Kxd8 29. Qxf7 Kc7 30. Qxf8 h5 31. Qxe7+ Kb6 32. Qd6+ Kb7 33. Qxc5 bxc3
34. bxc3 Kb8 35. Qe7 Kc8 36. c4 Kb8 37. c5 h4 38. c6 Kc8 39. Qd7+ Kb8 40. Qb7#
1-0
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