hi there if you play chess you'll probably recognize the following moves as illegal in the top row pawns move two squares at a time while they are not on their home row in the bottom row you'll see a pawn moving backwards and another one moving sidewards even so in classical chess these moves are illegal but there are variants of chess where these moves aren't illegal where they are actually explicitly part of the rules these are alternate chess rules and this paper is about exploring those rules what happens if you