A piece (either Knight or Man) may leap in any direction (horizontally, vertically, or diagonally) over an opposing piece (either Knight or Man) that occupies an adjoining square, provided there is an unoccupied square immediately beyond it in a direct line onto which the leap may be made. This move is called a Jump. Each enemy piece jumped over is captured and immediately removed from the board. A player is obliged to jump if any one of his pieces is next to an exposed enemy piece. Having jumped over one enemy piece, the jumping must continue as a part of that same move if the player's piece reaches a square next to another exposed enemy piece. When jumping over more than one piece, the direction of the move may be varied after each Jump. If presented with capturing alternatives, a player may choose which opposing piece to capture, and with which of his pieces to effect the capture. When compelled to jump, a player may, if he can, capture by a Knight's Charge instead. The only situation in which a player may ignore his obligation to jump is when, on his previous move, he has jumped one of his pieces over an opponent's piece into his own castle, ending his turn there, and must, on his next turn, immediately move that piece out from his castle.