There are exactly six things which he may do and no more.
Law 61 provides, "Should the declarer's partner call attention to any other incident of the play in consequence of which any penalty might have been exacted, the declarer is precluded from exacting such penalty."
Inasmuch as asking "Who won the trick?" is not one of the six privileges allowed the Dummy, such action is irregular, and must, of necessity, call attention to the revoke. Had the Dummy actually claimed the revoke, it would preclude the exaction of a penalty, even had the Declarer been about to claim it. It is, therefore, immaterial whether the Declarer would have noticed the revoke had the Dummy not made the irregular remark.
The question is decided in the negative.
Case 12
The adversaries of the Declarer take ten tricks, but revoke. Under these conditions, can either side score "except for honors or chicane?"
Decision
Law 84 provides that "a revoking side cannot score, except for honors or chicane."
It also provides: "If either of the adversaries revoke, the declarer may either add 150 points to his score in the honor column or may take three tricks from his opponents and add them to his own. Such tricks may assist the declarer to make good his declaration."
It is evident that the Declarer is given the option of either scoring 150 points or taking three tricks, should he prefer to make good his declaration rather than receive the bonus.