Empress (chess) and marshal are popular names for the rook+knight compound, although a case could be made for marshal, as the word is related to "mare" (female horse) and thus fits better for a piece that can move like a knight than chancellor, which has no connection to horses. Also, there are many commonly used chess pieces that, like chancellor, begin with "C" (e.g. the cannon in xiangqi, the camel in Tamerlane Chess, the champion in Omega Chess, and the cardinal or princess), and using the name marshal for the rook+knight compound would reduce this difficulty. The name empress is more widely
Chess is under attack, or a stalemate (a draw) if the king is not. Each chess piece has its own way of moving. In the diagrams, the dots mark the squares where the piece can move if there are no intervening piece(s) of either color. Once in every game, each king is allowed to make a special move, known as "castling". Castling consists of moving the king two squares along the first rank toward a rook (which is on the player's first rank) and then placing the rook on the last square that the king has just crossed. Castling is permissible