Antichess Solution Explorer

r n b q k b n r p p p p p p p p . . . . . . . . . . . . . . . . . . . . . . . . . . . . P . . . P P P P . P P P R N B Q K B N R
MoveScore# Positions
c5#-79Loss520 809 +++
e6#-72Loss138 115 +++
b6#-69Loss1 024 711 +++
b5#-62Loss194 471 +++
g5#-54Loss75 155 466
♘h6#-47Loss11 448 151
♘c6#-44Loss29 567 859
c6#-37Loss8 148 763
a6#-28Loss191 307
f6#-27Loss304 939
a5#-25Loss375 561
h5#-24Loss58 289
f5#-23Loss125 707
e5#-23Loss50 254
h6#-23Loss38 625
♘f6#-22Loss105 062
g6#-19Loss2 815
♘a6#-18Loss5 626
d5#-15Loss26
d6#-15Loss19
1. e3
— 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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