Antichess AI now on lichess

Why most variants are not available in the Lichess Mobile App?

I can beat Stockfish level 1 in anti chess :)

Shouldn't white on level 8 difficulty win every time? Since it has been solved

#13 I think white (human or AI) should win every time; however Stockfish has no opening book.

I think you're referring to suicide chess having been solved, though I'd expect antichess (which is giveaway chess minus castling rights) to have the same result.

@jimj12 Stockfish does not use the solution, so does not play perfectly.

Edit: @Toadofsky I think it has been solved with both rulesets, because only positions that are wins with both are considered a win in the solution. See http://magma.maths.usyd.edu.au/~watkins/LOSING_CHESS/LCsolved.pdf.

Just curious Who created the engine ubdip or toad ?

@Dragon-Lord Both. I have implemented the antichess rules and improved the search and evaluation. Toadofsky contributed some bugfixes and implemented the castling rights for giveaway, which is not trivial, since there might be multiple kings.

@ubdip

I see! great effort by both of you. Much appreciated :)

Does it have an opening book ?

because in the opening it plays some lost ones

for example D3

also its reply to e3 is not the best, it would be great if it played b6 or c5 against e3

And many antichess players on lichess have helped by playing against me, so that I have been able to improve my understanding of antichess in order to improve Stockfish's evaluation function.

@Dragon-Lord It does not have an opening book. On which level does it play d3?