Touch-move rule move or capture the first of the pieces that they touched. If it cannot be determined whether he touched his own piece or the opponent's piece first, it is assumed that he touched his own piece first. If a player touches more than one piece, he must move or capture the first piece that can be legally moved or captured. An exception to that is an attempted illegal castling; in that case the king must be moved if possible, but otherwise there is no requirement to move the rook. When castling, the king must be the first piece touched. If
Losing Chess most widely played (main variant) is described in "Popular Chess Variants" by D. B. Pritchard. The rules are the same as those for standard chess, except for the following special rules: A player wins by losing all their pieces, or being stalemated. Apart from move repetition, draw by agreement, and the fifty-move rule, the game is also drawn when a win is impossible (for example, when the only pieces remaining are ). Because of the forced capture rule, Losing Chess games often involve long sequences of captures by one player. This means that a minor mistake can doom a game.