[ Help | Earliest Comments | Latest Comments ][ List All Subjects of Discussion | Create New Subject of Discussion ][ List Earliest Comments Only For Pages | Games | Rated Pages | Rated Games | Subjects of Discussion ]Single Comment Rules of Chess: Check, Mate, and Stalemate. Answers to frequently asked questions.[All Comments] [Add Comment or Rating]Joe Joyce wrote on 2017-02-02 UTCTo Bill Nye. It is illegal to leave your king in check. When an illegal move is noticed, the rules require all subsequent moves to be retracted and re-done.