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An unexpected result from empirical computer studies is that the princess (a bishop-knight compound) and empress (a rook-knight compound) have almost exactly the same value, even though the lone rook is two pawns stronger than the lone bishop. The empress is about 50 centipawns weaker than the queen, and the princess 75 centipawns weaker than ...
Two rooks are generally considered to be worth slightly more than a queen (see chess piece relative value). [7] Winning a rook for a bishop or knight is referred to as winning the exchange. Rooks and queens are called major pieces or heavy pieces, as opposed to bishops and knights, the minor pieces. [8]
In chess, the exchange is the material difference of a rook for a minor piece (i.e. a bishop or knight). Having a rook for a minor piece is generally advantageous, since the rook is usually more valuable. A player who has a rook for a minor piece is said to be up the exchange, and the other player is down the exchange.
A chess piece, or chessman, is a game piece that is placed on a chessboard to play the game of chess.It can be either white or black, and it can be one of six types: king, queen, rook, bishop, knight, or pawn.
Exchanges occur very frequently in chess, in almost every game and usually multiple times per game. Exchanges are often related to the tactics or strategy in a chess game, but often simply occur over the course of a game. The exchange of a rook for bishop or knight is an uneven exchange [2] because a rook is generally more valuable than a ...
A rook versus a minor piece: normally a draw but in some cases the rook wins, see pawnless chess endgame. A rook versus a minor piece and one pawn: usually a draw but the rook may win. A rook versus a minor piece and two pawns: usually a draw but the minor piece may win. A rook versus a minor piece and three pawns: a win for the minor piece.
The particular value of rook polynomials comes from the utility of the generating function approach, and also from the fact that the zeroes of the rook polynomial of a board provide valuable information about its coefficients, i.e., the number of non-attacking placements of k rooks.
A pawnless chess endgame is a chess endgame in which only a few pieces remain, and no pawns.The basic checkmates are types of pawnless endgames. Endgames without pawns do not occur very often in practice except for the basic checkmates of king and queen versus king, king and rook versus king, and queen versus rook. [1]