Antichess Solution Explorer

r n b q k b n r p . p p p p p . p . . . . . . p . . . . . . . . . . . . . . . . . . . . P . . N P P P P . P P P R N B Q K . . R
MoveScore# Positions
h5#-21Loss27 914
f6#-20Loss5 546
e6#-18Loss2 537
g6#-17Loss844
g5#-16Loss617
♘c6#-16Loss296
♖h7#-16Loss152
c6#-16Loss114
e5#-15Loss165
c5#-15Loss44
a5#-15Loss43
♘f6#-15Loss35
f5#-15Loss33
d6#-15Loss20
d5#-15Loss14
♗b7#-14Loss13
1. e3 h6 2. ♗a6 bxa6 3. ♘h3
Watkins Opening
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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