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
William Lewis (chess player) treatises, but his isolation prevented him from assimilating the positional ideas of the new generation of chess-players. For this reason, Hooper and Whyld in their Oxford Chess Companion describe the last voluminous work of Lewis, "A Treatise on Chess" (1844), as already "out of date when published". William Lewis (chess player) William Lewis (1787–1870) was an English chess player and author, nowadays best known for the Lewis Countergambit and for being the first player ever to be described as a Grandmaster of the game. Born in Birmingham, William Lewis moved as a young man to London where he worked for