The rooks, which have the
symbol of a castle, move horizontally and vertically as many squares as you
choose. The only stipulation is that, like bishops, they cannot move over other
pieces. It is a little difficult to get the rook into the game, but once they
are out they are lethal!
Try it out! Go to setup mode and clear the board. Then select a rook from the
selection menu and place it on the board. Get a feel for the way a rook
moves.