Castling Castling Castling is a move in the game of chess involving a player's king and either of the player's original rooks. It is the only move in chess in which a player moves two pieces in the same move, and it is the only move aside from the knight's move where a piece can be said to "jump over" another. Castling consists of moving the king two squares towards a rook on the player's first , then moving the rook to the square over which the king crossed. Castling may only be done if the king has never moved, the
Touch-move rule the player is about to touch a piece on the board, typically to centralise it on its square, without the intent of making a move with it. Although this French term is customary, it is not obligatory; other similar indications may be used. A player may adjust a piece in this way only when it is his turn to move. There have been occasions in chess history when a player has uttered "j’adoube" after making a losing move in order to retract it, thus attempting to avoid the touch-move rule. Such behaviour is regarded as cheating (see cheating in chess).