LAW 59 - INABILITY TO LEAD OR PLAY AS REQUIRED
A player may play any otherwise legal card if he is unable to lead or play as required to comply with a rectification, whether because he holds no card of the required suit, or because he has only cards of a suit he is prohibited from leading, or because he is obliged to follow suit.
Law 58 - SIMULTANEOUS LEADS OR PLAYS | Law 60 - PLAY AFTER AN ILLEGAL PLAY |