Couldn't get any assistance from the help forum so I guess this is the next best place. When I try to place a conditional move involving en passent, it spits it back as an invalid move. Am I doing something wrong? Thanks.
I don't know much about this, but I think it is a programming fluke of some kind. I have also notices that sometimes it won't let me castle (the king moves over two squares, but the rook can't be moved over).