Fischer Chess, also known as Fisher Random or Chess960, is a variant of chess proposed by Robert Fischer in 1996. The rules of the game are similar to classical chess, but the initial arrangement of pieces is determined randomly with certain restrictions. The rooks are placed on opposite sides of the king, and the bishops must be on opposite-colored squares. This results in 960 unique initial positions. Castling is done by moving the king to the rook. After castling, these pieces occupy the same positions as in classical chess.