Wooden Pawns

Pawns move differently than other pieces. Unlike all the other pieces, pawns can not move backwards. Most of the time, a pawn moves by going up a single square, but the first time each pawn is moved from its starting place, it can go forward two squares. Pawns may not use the first two-square move to jump over a square with another piece on it or to capture. If there is any piece in front of a pawn, white or black, that prevents its movement.