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
Candidate move Candidate move In abstract strategy board games, candidate moves are moves which, upon initial observation of the position, seem to warrant further analysis. Although in theory the idea of candidate moves can be applied to games such as checkers, go, and xiangqi, it is most often used in the context of chess. The idea of candidate moves was first put forth by Grandmaster Alexander Kotov in his book "Think Like a Grandmaster". In it, Kotov recommended looking for several moves that seemed feasible – the so-called candidate moves – and then analyzing those moves one at a time. Although this