Antichess Solution Explorer

r . b q k b n r p . . p p p p p p . p . . . . . . . . . P . . . . . . . . . . . . . . . . . . . P P P P . P P P R N B Q K . N R
MoveScore# Positions
♘f6#-27Loss48 191
♘h6#-25Loss136 185
♗b7#-23Loss42 617
a5#-22Loss45 534
♖b8#-22Loss11 233
♕a5#-21Loss96 397
g5#-21Loss59 359
f6#-21Loss30 220
f5#-21Loss30 220
c5#-21Loss18 686
h6#-21Loss5 196
♕b6#-20Loss16 364
♕c7#-20Loss13 066
g6#-19Loss7 008
h5#-19Loss6 220
d6#-16Loss283
d5#-16Loss283
e6#-15Loss68
1. e3 c6 2. e4 ♘a6 3. ♗xa6 bxa6 4. 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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