blackshoe, on 2012-September-29, 13:00, said:
This puts a time limit on application of Law 64A of the first call by a non-offending member of a call on the subsequent deal or the end of the round, whichever comes first. However
Nothing in this or any other law imposes the restrictions you stated earlier ("for Law 64C to become applicable after that it must be for the side that claims a revoke being committed by opponents to show sufficient evidence of this, and also to show an acceptable reason why they did not call attention to this alleged revoke in time.") In particular, the second part of that is nonsense, unless a simple "I didn't realize there was a revoke until after the hand was played" is acceptable to you. And the only time limit on application of 64C is the end of the correction period as specified in Law 79C or amended by regulation. Also, the legal onus regarding evidence is on the director to collect it, not on players to present it.
This is exactly the reaction I expected. But:
Law 79C said:
1. An error in computing or tabulating the agreed-upon score, whether made by a player or scorer, may be corrected until the expiration of the period specified by the Tournament Organizer. Unless the Tournament Organizer specifies a later* time, this Correction Period expires 30 minutes after the official score has been made available for inspection.
2. Regulations may provide for circumstances in which a scoring error may be corrected after expiry of the Correction Period if the Director and the Tournament Organizer are both satisfied beyond reasonable doubt that the record is wrong.
* An earlier time may be specified when required by the special nature of a contest.
Law 79C primarily applies to scoring errors, but our discussion is not about a scoring error - it is about deciding whether there has been an irregularity during the play. There are specific and very relevant references to Law 79C from Laws 69B and 71 affecting the procedures prescribed in these laws. Law 64 contains no similar reference, thus indicating that Law 64 is self-contained with respect of procedures.
Law 64C applies when it is a fact that a revoke has been committed and become established, we have to go elsewhere when there is disagreement about the existence of the revoke.
When the question whether or not a revoke was committed must be decided under Law 85 (judging probabilities because of disagreements and lack of facts) the TD (and AC) should either be bound by the time limits in Laws 64B4/5 or by no time limit at all.
The latter is of course ridiculous, thus I have reached my opinion that in the case of revokes to which attention has been called after the limits specified in Laws 64B4/5 the application of Law 64C is limited to such cases where there is no doubt at all about the revoke.