The Declarer leads three rounds of Trumps, on the third an adversary refuses.

Later in the play the Declarer leads a winning card which is trumped by the adversary who has refused Trumps.

The player who trumped the trick gathered it.

The Declarer said, "How did you win it?"

The player answered, "I trumped it."

The Dummy then said, "Who trumped it?"

After this remark by the Dummy, the Declarer claims a revoke, the claim is disputed upon the ground that the Dummy called the revoke to the attention of the Declarer. The Declarer states that he would have made the claim, regardless of Dummy's remark.

Query: Should the revoke be allowed?

Decision

Law 60 prescribes explicitly the privileges of the Dummy after he has placed his hand on the table.