e/Alcatraz coup

Information
has gloss	eng: The Alcatraz coup is an illegal method of learning about the opponents' cards in contract bridge. It is not a true coup; the word is being used facetiously in conjunction with the name of the former Alcatraz penitentiary. The "coup" consists of a deliberate revoke by declarer, causing the next player to reveal whether he holds the key card whose location is sought. The declarer then corrects the revoke (which is allowed without penalty if done soon enough) and the defender may change his play, but declarer now knows about the key card and can choose how to finesse accordingly.
lexicalization	eng: Alcatraz coup
instance of	c/Bridge techniques