Hello,
I am using gnuchess as a chess engine for a website I have developed. After a player makes a move, I generate a FEN file, spawn a process that runs 'gnuchess -x' and sends commands via standard in and reads from standard out.
I have come across a FEN position that gnuchess says is bad but is being verified by other tools as being correct. I have verified the same results manually.
Versions tried:
gnuchess 6.2.1, 6.1.2, 6.1.1
FEN string:
2kr4/pp3pp1/4b1p1/2R5/8/1P4P1/P1PP3r/2K5 b - 2 21