Fairy chess piece a "crowned" piece. The crowned knight combines the knight with the king's moves. The dragon king of shogi is a crowned rook (rook + king). Marine pieces are compound pieces consisting of a rider (for ordinary moves) and a locust (for captures) in the same directions. Marine pieces have names alluding to the sea and its myths, e.g., nereide (marine bishop), mermaid (marine queen), or poseidon (marine king). Some classes of pieces come from a certain game, and will have common characteristics. Examples are the pieces from xiangqi, a Chinese game similar to chess. The most common are the "leo",
Chess piece relative value minor pieces are usually better than a queen because of their greater mobility, and the extra pawn is not important enough to change the situation . Three minor pieces are almost as strong as two rooks . Two minor pieces plus two pawns are almost always as good as a queen. Two rooks are better than a queen and pawn . Many of the systems have a 2-point difference between the rook and a minor piece, but most theorists put that difference at about points, see The exchange (chess)#Value of the exchange. In open positions, a rook plus a pair