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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 the different piece. The game is one of ''Recognized Chess Variants'' at ''The Chess Variant Pages''.〔(The Chess Variant Pages: Recognized Chess Variants )〕 == Rules == The starting position in this game is the same as in standard chess. Players make moves as in standard chess. Instead of moving, a player can take one of their own pieces from the board and put it into the pocket, provided that the pocket is empty. If the piece is placed into the pocket from the last rank, it gets promoted to a piece of higher class. Otherwise the player has an option to mutate the piece into a different piece of the same class. The choice of mutating (or not) must be made at the time the piece is removed. White cannot use the pocket on the first move. The king cannot be placed into the pocket. As a players move, a piece in the pocket can be dropped on any empty position on the board, except the last rank. A pawn can make only a single step from the first rank, but can do a double step from the second one, even if dropped there or moved from the first rank. The ''en passant'' rule applies as in standard chess. Pawns that reach the last rank do not get promoted immediately. Instead, they can be placed into the pocket and promoted to a piece of higher class. There is no castling in this chess variant. The game is declared a draw if no capture or promotion was made for 50 consecutive moves. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pocket mutation chess」の詳細全文を読む スポンサード リンク
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