Pocket Mutation Chess Pocket Mutation Chess Pocket Mutation Chess is a chess variant invented by Mike Nelson in 2003. In this game a player can take a piece from the board and put it into a "pocket". The piece in the pocket can be put back on the board later. When placing the piece into the pocket the player can "mutate" the piece, i.e. change it to a different piece. The game is one of the "Recognized Chess Variants" at "The Chess Variant Pages". The starting position in this game is the same as in standard chess. Players make moves as in standard
White and Black in chess with an extra tempo. As late as the mid-to-late 19th century, the practice of White moving first had not yet become standard. George Walker in his popular treatise "The Art of Chess-Play: A New Treatise on the Game of Chess" (4th edition 1846), set forth the rules of London's St. George's Chess Club promulgated in June, 1841. "Law III" provided that the player who moved first had the choice of color; if the players played more games at the same sitting, the first move would alternate, but each player would continue to use the same colored pieces as he had