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
♕a5#-22Loss30 205
♕b6#-17Loss663
c4#-16Loss987
♘h6#-16Loss837
h5#-16Loss603
♕c7#-16Loss438
f6#-16Loss409
f5#-16Loss409
h6#-16Loss62
d6#-15Loss182
d5#-15Loss182
a5#-15Loss121
g6#-15Loss114
g5#-15Loss63
♘f6#-15Loss53
♖a7#-15Loss32
e6#-14Loss28
♘c6#-14Loss16
♗b7#-14Loss13
1. e3 c6 2. e4 a6 3. ♗xa6 bxa6 4. e5 c5 5. ♘c3
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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