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
Kung-Fu Chess Chess contained six different game types: in addition to the four existed in Shizmoo's Kung-Fu Chess, also included Fast Standard, and Four-Way Crazyhouse. On May 27, 2014 Tempest was discontinued by its owner. In 2010 a game similar to Kung Fu Chess dubbed "Ninja Chess" has been developed for iPhone and iPad. It is published on the App Store by Nordlysa Entertainment, but has been abandoned by the creator and is currently unavailable from the Store. This project brings the concept of Real-Time Chess to touch interfaces and includes the ability to play Head-to-Head (each player facing his own board).