Antichess Solution Explorer

r . b q k b . 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#-25Loss20 744
h6#-18Loss11 151
♕b6#-18Loss4 618
♗h6#-18Loss4 135
♗g7#-18Loss4 054
♗b7#-17Loss2 486
♕c7#-16Loss1 034
e6#-15Loss258
e5#-15Loss223
♖g8#-15Loss118
h5#-15Loss91
c5#-15Loss14
a5#-15Loss14
♖b8#-14Loss80
f5#-14Loss25
d5#-13Loss23
d6#-13Loss21
1. e3 c6 2. e4 ♘a6 3. ♗xa6 bxa6 4. e5 ♘f6 5. exf6 gxf6 6. ♘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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