H. G. Muller wrote on Thu, Sep 15, 2016 05:01 PM UTC:
You are right! There is a double move when you use the start position Fairy-Max thinks is standard, but if you set up a position through the GUI the double move disappears?!? This is a bug in Fairy-Max' position setup. Only virgin Pawns have the right to double move, but the test whether a Pawn put on the board during sets up is virgin assumes virginity for second-rank Pawns, rather than using the rank where it would put the Pawns itself. So far the only variants where Pawns did start on other ranks than 2nd were Makruk/ASEAN and Grant Acedrex, and neither of these have a double push. So the bug could remain undetected.
You are right! There is a double move when you use the start position Fairy-Max thinks is standard, but if you set up a position through the GUI the double move disappears?!? This is a bug in Fairy-Max' position setup. Only virgin Pawns have the right to double move, but the test whether a Pawn put on the board during sets up is virgin assumes virginity for second-rank Pawns, rather than using the rank where it would put the Pawns itself. So far the only variants where Pawns did start on other ranks than 2nd were Makruk/ASEAN and Grant Acedrex, and neither of these have a double push. So the bug could remain undetected.