gnasher, on 2011-March-08, 18:52, said:
I think you should go back and read the paragraph that I quoted. You said, "But the normal approach-- do you play this? is it on your system card? why did you do this then? --seems to me to allow players to conceal conventions by claiming there is no agreement, which many have learned to do quite skilfully."
When did this North-South claim that there was no agreement, and where is the evidence of skillful deceit?
It seems to me that the only offence that may have been committed by North-South was to fail to alert a bid which was less than "about the expected strength". That may have been deliberate, but it seems rather more likely that they were unaware that this agreement was alertable. They may not even have realised that there was anything unusual about bidding 2♥ on the South hand.
It seems to me perfectly reasonable to rule that there was misinformation because of a failure to alert. But on the face of it there is no reason to suspect this North-South pair of any intentional impropriety, which is what you seem to be suggesting.
If the N-S pair have an implicit agreement that there is a possibility that 2
♥ can be made on a weak hand, then they need to disclose that. But an implicit agreement is one that has not actually been agreed on and discussed by a pair, thus one that develops based on tendencies and styles may well be something that they are unaware requires an alert. If you play that the 2
♥ bid shows, say, 10 or more, and over the course of several dozen sessions the requirements dip to 9, then 8, then even weaker, both members of the partnership may not realize that what was initially a forcing call has become a non-forcing call, or at least one that doesn't promise another call later. That was my initial (and quite strong) impression at the table from the comments that were made. I never thought anyone had concealed anything deliberately.
I guess what I'm trying to say is that when a player says "we have no agreement" that does not necessarily preclude the possibility that they have an implicit agreement, and a TD should ask some questions and try to find out.