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
History of chess by the common public, and even the courtly society, which continued to enjoy the now-prohibited chess tournaments uninterrupted. The pieces, which had been nonrepresentational in Islamic countries (see piece values in shantranj), changed shape in Christian cultures. Carved images of men and animals reappeared. The shape of the rook, originally a rectangular block with a V-shaped cut in the top, changed; the two top parts separated by the split tended to get long and hang over, and in some old pictures look like horses' heads. The split top of the piece now called the bishop was interpreted as a bishop's