Antichess Solution Explorer

r n b q k b n r p p . p p p . p . . p . . . . . . . . . . . p Q . . . . P . . . . . . . . . . . P P P P . P P P R N B . K B N R
MoveScore# Positions
♘h6#-30Loss15 049
♕b6#-20Loss5 237
g4#-19Loss5 689
♕a5#-19Loss3 081
♕c7#-19Loss2 941
a6#-17Loss591
c5#-17Loss343
♘a6#-17Loss172
b5#-17Loss117
d5#-16Loss253
♘f6#-16Loss206
f6#-16Loss170
♗g7#-16Loss140
a5#-16Loss82
e6#-16Loss66
♗h6#-16Loss49
h6#-16Loss40
b6#-16Loss36
d6#-16Loss22
f5#-16Loss21
e5#-15Loss17
1. e3 c6 2. e4 g5 3. ♕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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