The copper cannon moves as a bishop, by sliding any number of empty squares in a diagonal direction, but can capture an enemy only if there is another piece (of either side) in between. Thus to capture the copper cannon leaps over the intervening piece and lands on the enemy piece, like a cannonball. This is the same move and capture as the gold cannon, but in a diagonal rather than orthogonal direction. The copper cannon may promote (optionally) to a flying copper cannon if it begins or ends its move in one of the last 3 ranks of the board. As a flying copper cannon it gains the power to move diagonally over whole rows to leap one piece while moving. Additionally, it can move one square orthogonally, or move or capture two squares orthogonally, by leaping an adjacent piece.