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 makes the pieces bottom heavy and do not topple easily (a well-weighted piece should come upright even if bent to 60 degrees off vertical axis). This helps in blitz games as the speed of movement doesn't offer enough time or precision in dropping the pieces onto the intended squares. The length of each side of the squares on the chessboard should be about 1.25–1.3 times the diameter of the base of the king, or . Squares of about are normally well suited for pieces with the kings in the preferred size range. These criteria are from the United States Chess