This is Release 4.71 of Popeye.

Downloading Popeye

Popeye executable

In order to use Popeye, you want to download an executable program or the source code to build an executable program yourself.

Instead of download the source zip archive, you can also clone the git repository or (I assume) use one of the Source Code links below.

Download the usage guide in your favourite language:

The example input file archives will help you input problems correctly:

Hurdle Colour Changing hoppers: pawn promotions weren't done consistently
neutral pawns: were promoted when reborn on the wrong promotion rank
Haaner Chess: castling wasn't dealt with correctly
Koeko: neutral pieces weren't dealt with correctly
BackToBack and Madrasi: there were strange paralyses
A=>B stipulation and SwappingKings: spurious solutions were found
A=>B stipulation and ChameleonChess: some solutions were missed
A=>B stipulation and BlackSuperTransmutingKing: some solutions were missed
Circe Take&Make: en passant captures were not supported
Circe Cage: neutral pieces were reborn in strange "cages"
Circe/Anticirce Parachute/Volcanic: some rebirths were not performed
Circe and Volage: fixed an obscure en passant bug
Circe Parrain and Volage: Volage wasn't applied to reborn pieces
Reversal Einstein Chess: pawns were promoted when reaching their sides orthodox promotion rank
Messigny Chess: neutral pieces could swap with themselves
checks to a SuperTransmutingKing were defended against by any move
proof games (including A=>B) and AntiCirce: some solutions were not found
serveral issues with castlings
double grasshoppers could capture themselves when adjacent to a hurdle
fixed some input handling glitches
LaTeX output: tries were marked with ! instead of ?