Antichess Solution Explorer

r n b . k b n r p p . p p p . p . . . . . . . . . p . . . . N . . P . . . . . . . . . . P . . . P . Q P . P P P R N B . K . . R
MoveScore# Positions
h5#-32Loss71 602
♘h6#-16Loss842
♘c6#-15Loss334
♘a6#-15Loss309
h6#-15Loss272
d6#-15Loss272
f5#-15Loss227
d5#-15Loss169
a6#-15Loss126
♘f6#-15Loss115
f6#-15Loss82
♗h6#-15Loss81
a5#-15Loss57
b6#-15Loss56
♔d8#-15Loss40
e6#-14Loss59
e5#-14Loss58
♗g7#-13Loss49
1. e3 c6 2. ♗b5 cxb5 3. b4 ♕c7 4. ♘f3 ♕xc2 5. ♕xc2 g5 6. ♘xg5
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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