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
Kriegspiel (chess) Kriegspiel (chess) Kriegspiel is a chess variant invented by Henry Michael Temple in 1899 and based upon the original Kriegsspiel (German for "war game") developed by Georg von Reiswitz in 1812. In this game each player can see their own pieces, but not those of their opponent. For this reason, it is necessary to have a third person (or computer) act as a referee, with full information about the progress of the game. When it is a player's turn he or she will attempt a move, which the referee will declare to be 'legal' or 'illegal'. If the move is