CHAPTER VI
The Play 

PART III
IRREGULAR LEADS AND PLAYS

SECTION THREE
THE REVOKE

LAW 61 - FAILURE TO FOLLOW SUIT - INQUIRIES CONCERNING A REVOKE 

A. Definition of Revoke

Failure to follow suit in accordance with Law 44 , or failure to lead or play, when able, a card or suit required by law or specified by an opponent in accordance with an agreed penalty, constitutes a revoke (but see Law 59 when unable to comply).

B. Right to Inquire about a Possible Revoke

Declarer may ask a defender who has failed to follow suit whether he has a card of the suit led (but a claim of revoke does not automatically warrant inspection of quitted tricks - see Law 66C). Dummy may ask declarer (but see Law 43B2(b)). Defenders may ask declarer but, unless the zonal organisation so authorises, not one another.