Yes, there is, you're looking for: and In this case, it seems to me that declarer would immediately notice the problem when the first club in played and defence reject the revoke and will then take careless but not irrational lines which involve a cross-ruff, since that is a later parrt of the claim which appears valid. Given it's clearly at most careless (and possibly the percentage line) to play for split honours, I'd rule a diamond trick to defence. OK the guidance seems clear about not accepting the revoke and if we have nothing to go on it is clear to award a diamond trick to the defence ... but doesn't the statement about how diamonds will be played come under ... Maybe we would follow it if it worked out badly for claimer.