Antichess Solution Explorer

r n b q k b n r . . . p p . . p p . p . . p . . . . . . . . . Q . . . . . . . . . . . . . . . . P P P P . P P P R N B . K . N R
MoveScore# Positions
♗g7#-18Loss3 272
♔f7#-18Loss2 219
♕c7#-18Loss2 103
♖a7#-18Loss1 980
h6#-18Loss1 616
f5#-17Loss6 014
♕b6#-17Loss1 814
♕a5#-17Loss1 084
a5#-17Loss988
♗b7#-16Loss1 538
c5#-14Loss90
♗h6#-14Loss82
♘h6#-14Loss13
e6#-13Loss12
d6#-13Loss12
e5#-13Loss12
d5#-13Loss12
1. e3 c6 2. e4 a6 3. ♗xa6 bxa6 4. e5 f6 5. exf6 gxf6 6. ♕h5
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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