hotShot, on May 29 2008, 08:13 AM, said:
By using a call a player expect his partner to understand it, at least the player hopes that his call will be understood. In other words the player is hoping for an implicit agreement.
There is a world of difference between an expectation that his partner will understand it and a hope that he will. In the former case there is an agreement, perhaps explicit, perhaps implicit. In the latter case there is not (unless of course there is an expectation in addition to a hope).
The purpose of alerts and explanations is to level the playing field, not to give the opposing side a deliberate advantage. Accordingly the key to whether or not the bid should be alerted (or explained as "no agreement", which hinges on the same general principles) should be in whether or not partner has a greater chance than the opponents of guessing the meaning.
A scenario illustrates this point. A player sits down as a sub opposite a pickup partner and has no system discussions. The round clock has 3 minutes to go and counting. They have diametrically opposing systems in their profiles. One of them opens 1NT and the other responds 2H. Leaving aside the alerting regulations, let as assume that the opponents click on the bid, so that disclosure of the precise partnership agreement is required regardless of whether the bid is either alertable or alerted. Now, in an ideal world, any opponents with a grain of sporting standards would allow responder to state to the entire table what was meant by the 2H bid. But I believe that the above scenario is not in fact uncommon in practice on BBO. So, should responder disclose to the opponents whether he intended 2H as a transfer or (alternatively) to show Hearts, knowing that his partner is going to have to guess? Would the opponents be satisfied with the explanation "it either shows Hearts or it shows Spades, but is not a 2-way bid"?
Now you may argue, with some justification, that it is poor judgement on the part of responder to make a bid that is open to catastrophic misinterpretation. And yet if he feels that 1NT is going to be a disastrous score anyway, he might have to choose blind between natural and transfer on the grounds that the only chance of a reasonable result is if opener accurately guesses, with no more information available to him than that available to the defenders, what was intended by the call, and so he makes the call in the hope that it will be correctly interpreted. His only expectation, however, is that 1NT would be a disaster.
I suggest that under such circumstances there is no obligation to disclose the intended meaning of the call. It is I think a more difficult question to resolve, whether "no agreement" is as acceptable as "it either shows Hearts or it shows Spades, but is not a 2-way bid". Responder probably has more of an expectation than a hope that opener will make a choice from between those options, even though there has been no discussion. His expectation is born of nothing more than common bridge knowledge, the pool of which is equally available to opponents. Personally I would answer "it either shows Hearts or it shows Spades, but is not a 2-way bid" despite that it provides no more assistance to the opponents than "no agreement", simply because it is one less point to argue about in the post mortem.
I think that this has been thrashed out many times in these forums, but it seems that no-one who already has an opinion on this will ever be persuaded to change their mind.
Psych (pron. saik): A gross and deliberate misstatement of honour strength and/or suit length. Expressly permitted under Law 73E but forbidden contrary to that law by Acol club tourneys.
Psyche (pron. sahy-kee): The human soul, spirit or mind (derived, personification thereof, beloved of Eros, Greek myth).
Masterminding (pron. m

s

t

r-m

nd

ing) tr. v. - Any bid made by bridge player with which partner disagrees.
"Gentlemen, when the barrage lifts." 9th battalion, King's own Yorkshire light infantry,
2000 years earlier: "morituri te salutant"
"I will be with you, whatever". Blair to Bush, precursor to invasion of Iraq