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 usual 3.Nc3, instead placed his on c3. Since that move was illegal, White was compelled to instead move his king. After the forced 3.Ke2??, Black gave checkmate with 3...Qe4# . In England, the 1862 laws of the British Chess Association rejected the above rule. The Association's Law VII provided instead that if a player made an illegal move, "he must, at the choice of the opponent, and according to the case, either move his own man legally, capture the man legally, or move any other man legally moveable." . The German chess master Siegbert Tarrasch wrote in "The Game of