Dummy points out part of the way through the play that a defender has revoked (which was already established).
Dummy has not done anything they aren't allowed to do under 43 A 2.
If declarer had pointed out the revoke, it would be a one trick penalty.
Equity (in the Law 64C sense) would be the table result .
How do you rule?
I note that if dummy had waited until the end of play, but then said something before the start of the next board, there would be a one trick penalty.
My immediate reaction is that I would apply the revoke rules, but then give dummy a PP, quoting laws 43B1 and 81C3.
Side note: could the revoking side claim that no-one would have noticed, and then there should only be an equity adjustment under 72C?
The reason I ask is that an EBU director has said something totally different in print. Now I am confused.