Antichess Solution Explorer

r n b q k b . r p p . p p p p p . . p . . . . . . . . . P . . . . . . . . . Q . . . . . . . . . P P P P . P P P R N B . K B N R
MoveScore# Positions
♕a5#-34Loss2 105 160
♕c7#-23Loss12 482
g5#-22Loss46 404
a6#-17Loss846
♖g8#-17Loss410
♕b6#-17Loss148
d6#-16Loss292
g6#-16Loss141
f6#-16Loss114
e6#-16Loss107
♘a6#-16Loss16
b6#-16Loss15
b5#-16Loss15
f5#-15Loss16
c5#-15Loss14
h6#-15Loss14
h5#-15Loss14
a5#-15Loss14
d5#-14Loss13
1. e3 c6 2. e4 ♘h6 3. e5 ♘g4 4. ♕xg4
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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