Chess piece relative value value for the king is given, this is used when considering piece development, its power in the endgame, etc. World Correspondence Chess Champion Hans Berliner gives the following valuations, based on experience and computer experiments: There are adjustments for the rank and file of a pawn and adjustments for the pieces depending on how open or closed the position is. Bishops, rooks, and queens gain up to 10 percent more value in open positions and lose up to 20 percent in closed positions. Knights gain up to 50 percent in closed positions and lose up to 30 percent in the
Chess piece Chess piece A chess piece, or chessman, is any of the six different movable objects used on a chessboard to play the game of chess. Each player begins with a total of sixteen pieces. The pieces that belong to each player are distinguished by color. The lighter colored pieces are referred to as "white," and the player that owns them, "White". The darker colored pieces are referred to as "black", and the player that owns them, "Black". The word "piece" has three meanings, depending on the context. The context should make the intended meaning clear . In the first context,