The gold cannon moves as a rook, by sliding any number of empty squares along a row or column, but can capture an enemy only if there is another piece (of either side) in between. Thus to capture the gold cannon leaps over the intervening piece and lands on the enemy piece, like a cannonball. This is the same move and capture as the "cannon" (Pao) of Chinese chess (xiangqi). The gold cannon may promote (optionally) if it begins or ends its move in one of the last 3 ranks of the board. On promotion it becomes a flying gold cannon. As a flying gold cannon it may move orthogonally over whole rows and is able to leap one piece while moving. Additionally, it can move one square diagonally, or move or capture two squares diagonally, by leaping an adjacent piece.