Antichess Solution Explorer

r n b q k b n r p . . p p p p p . p . . . . . . . p . . . . . . . P . . . . . . . . . . P . . . P . P P K P P P R N B Q . . N R
MoveScore# Positions
a5#-57Loss643 035
♕c7#-40Loss127 400
h6#-28Loss36 020
g6#-25Loss63 411
g5#-23Loss100 646
f6#-20Loss21 779
f5#-20Loss8 052
♘h6#-17Loss1 536
a6#-16Loss166
h5#-15Loss121
♘f6#-15Loss47
♘c6#-15Loss41
♘a6#-15Loss41
♗a6#-14Loss53
d6#-14Loss15
e5#-14Loss15
e6#-14Loss13
♗b7#-13Loss12
d5#-13Loss12
1. e3 c6 2. ♗b5 cxb5 3. b4 b6 4. ♔e2
Andryushkov DefenceFrâncu-Nye 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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