Antichess Solution Explorer

r n b q k b . r p p . p p p p p . . p . . . . n . . . . P . . . . . . . . . . . . . . . . . . . P P P P . P P P R N B Q K B N R
MoveScore# Positions
♘g4#-35Loss2 166 015
a6#-34Loss308 613
d6#-34Loss298 200
d5#-34Loss298 200
♖g8#-27Loss83 461
♘a6#-26Loss136 186
♕a5#-26Loss41 586
♘g8#-25Loss85 257
f6#-25Loss54 671
f5#-25Loss54 671
b5#-23Loss215 992
♘f5#-23Loss49 050
♕b6#-20Loss17 066
b6#-19Loss2 587
♕c7#-18Loss2 651
a5#-17Loss615
c5#-17Loss528
e6#-17Loss218
g5#-16Loss29
g6#-15Loss14
1. e3 c6 2. e4 ♘h6 3. 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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