Players may move pieces of themselves or of their opponent. By Hans Bodlaender. G H I Interchange Chess . Invented by David Howe, Fergus Duniho, and Alexandre Muniz. All pieces are the same color.
Players move pieces on their side of the board.
By Andrew Looney. N O One or two . Make a normal move, or denote two pieces for which your opponent chooses how they must be moved. By Ralph Betza. P Progressive Orthodox Chess .