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Public replay · 0-1 · ECO B02

Alekhine Defense: Black mates in 39 moves

Alekhine Defense (B02): Player vs Chessdox Computer, casual level. Black mates with the rook after 39 moves with 20 captures and 6 checks.

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Position after 39... Rc1#B02 Alekhine Defense

Game summary

Alekhine Defense — how the game went

Player (White) and Chessdox Computer (Black) played this casual-level game. It opened with the Alekhine Defense, classified as ECO B02, after 1. e4 Nf6.

White castled kingside, while Black's king never castled. Over 39 moves the game saw 20 captures, 6 checks.

Black delivered checkmate with the rook on 39... Rc1#. At the end White had 12 points of material and Black 14 points, counting pawns as 1, knights and bishops as 3, rooks as 5 and queens as 9.

Final position after 39 moves, black won (0-1). FEN: 8/2k2p2/2n5/1p6/1P1P2R1/1b4p1/6R1/2r3K1 w - - 2 40
Final position · 0-1

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[Event "Chessdox public replay"]
[Site "https://chessdox.com/games/casual-replay-from-1-e4-black-wins-in-39-moves-75c68eee56876dde1d3a"]
[Date "2026.09.10"]
[Round "-"]
[White "Player"]
[Black "Chessdox Computer"]
[Result "0-1"]
[TimeControl "180+2"]
[ECO "B02"]
[Opening "Alekhine Defense"]
[Termination "normal"]
[PlyCount "78"]

1. e4 Nf6 2. Nc3 d6 3. Nf3 Be6 4. d3 Nc6 5. g3 h6 6. Bg2 g5 7. O-O g4 8. Nh4 a6
9. f4 Bd7 10. Be3 h5 11. a3 b5 12. Qd2 Rb8 13. b4 a5 14. Rab1 axb4 15. axb4 e6
16. h3 Rb7 17. Kh2 Bh6 18. Ne2 Rb8 19. f5 gxh3 20. Bxh3 Bxe3 21. Qxe3 Ng4+ 22.
Bxg4 hxg4 23. fxe6 Rxh4+ 24. gxh4 Qxh4+ 25. Kg1 Bxe6 26. Qg3 Qxg3+ 27. Nxg3 Kf8
28. Rf6 Re8 29. c3 Ke7 30. Rbf1 Kd8 31. d4 Bc4 32. R1f2 Bb3 33. Nf5 Rxe4 34.
Nxd6 cxd6 35. Rxd6+ Kc7 36. Rdf6 Re3 37. Rg2 g3 38. Rf4 Rxc3 39. Rg4 Rc1# 0-1
All Alekhine Defense games