Antichess Solution Explorer

r n b q k b n r . . . p p p p p p . p . . . . . . . . . P . . . . . . . . . . . . . . . . . . . P P P P . P P P R N B Q K . N R
MoveScore# Positions
♘h6#-33Loss292 721
♕a5#-24Loss81 590
c5#-23Loss34 829
♖a7#-22Loss142 689
♘f6#-22Loss78 813
g5#-22Loss41 509
♕b6#-21Loss49 677
♗b7#-21Loss17 834
♕c7#-20Loss22 554
f6#-20Loss22 071
f5#-20Loss22 071
a5#-19Loss15 136
h6#-19Loss8 265
g6#-19Loss7 436
h5#-18Loss6 342
d6#-16Loss261
d5#-16Loss261
e6#-14Loss63
1. e3 c6 2. e4 a6 3. ♗xa6 bxa6 4. e5
Andryushkov DefenceSteenhuis's Proof
Open on Lichess

The site features solutions for some antichess openings, providing a path that White or Black can follow so as to defeat any defense. The solutions will be gradually updated and supplemented.

The solutions of Mark Watkins, Klaas Steenhuis, and Cătălin Frâncu were partially used. Pierre Caetano's suggestions regarding reducing the maximum winning length are included in 1.f4, 1.♘c3, 1.e3 f6, and 1.e3 b5 lines. Credit to Vladica Andrejić for most of the opening names and their proof status. Pedro Re's suggestions regarding reducing the maximum winning length are included in 1.a3, 1.h3, 1.c3, 1.b4, 1.♘c3, 1.h4, 1.f4, 1.♘f3, 1.c4 ♘h6, 1.c4 b5, 1.e3 c6, 1.e3 b5 2.♗xb5 ♗a6, 1.e3 c5, and 1.e3 b5. Yabba's suggestions are included in 1.h3, 1.e3 g5, 1.e3 ♘c6, 1.e3 c5 2.♗b5 e6/a5/b6/♕c7/♕a5/Nh6, and 1.e3 b5 2.♗xb5 e6 3.♗xd7 ♗xd7 4.♘h3 ♘e7. Awkwardmammal's suggestions are included in 1.e3 b6, 1.e3 g5, and 1.e3 a5. Thanks to ChessDemon989 for his help with comprehension of the technical aspects of Watkins solutions and the factoradic in the context of its application to endgame tablebases.
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