AnarchyChess

It can be a legal move. A pawn moving 2 squares was added to speed up the game. To keep the balance, "en Passant" was also added. If a pawn uses a double move, on the next turn only, a pawn can capture it, as if it only moved 1 square. This leads to a diagonal move by the attacking pawn, and the defending pawn being removed from a different square.