Antichess Solution Explorer

r n b q k b n r . . . p p p p p . . p . . . . . p . . . P . . . . . . . . . . . N . . . . . . . P P P P . P P P R . B Q K . N R
MoveScore# Positions
♘a6#-18Loss8 763
♕b6#-17Loss2 239
♘h6#-16Loss837
f6#-16Loss719
f5#-16Loss719
c5#-16Loss495
♕c7#-16Loss464
h5#-16Loss441
♘f6#-16Loss332
♖a6#-16Loss91
♖a7#-16Loss91
e6#-15Loss268
a4#-15Loss130
d6#-15Loss126
d5#-15Loss126
g6#-15Loss109
g5#-15Loss81
h6#-15Loss44
♗b7#-14Loss18
♗a6#-14Loss17
1. e3 c6 2. e4 a6 3. ♗xa6 bxa6 4. e5 a5 5. ♘a3
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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