Monochromatic chess d2 and f2, the white king can move from e1 only with castling and then g1–h2–g3–... so the pawn on g3 cannot be white. In Bichromatic chess, the opposite restrictions apply. A piece on a white square must move to a black square and vice versa. Hence pawns cannot capture (or advance two squares) and bishops cannot move. Also, castling and "en passant" are impossible, and queens behave like rooks. Monochromatic chess Monochromatic chess is a chess variant with unknown origin. The initial board position and all rules are the same as in regular chess, except that pieces that begin
Touch-move rule The Yugoslav grandmaster Milan Matulović was nicknamed "J’adoubovic" after such an incident . The touch-move rule has existed for centuries. In the Middle Ages strict rules were considered necessary because chess was played for stakes. Luis Ramirez de Lucena gave the rule in his 1497 book "Arte de Axdres" . Benjamin Franklin referred to it in his 1786 essay "The morals of chess" . At one time the rule also required the player who played an illegal move to move his king. In the first half of the nineteenth century, Rule XIII of the London Chess Club provided: If a