lamford, on 2015-June-23, 02:18, said:
All calls are "available" in the sense that they are "at someone's disposal" in the context of this Law. So, the sequence Pass-Pass-1NT was "available" to North-South at the start of the auction, and, more importantly, "relevant" to East's decision now, or East could ask about all sequences, which would be ridiculous. Let us say that someone opens 1C and rebids 1NT and this differs in meaning from opening 1D followed by rebidding 1NT. They might show different balanced ranges, or the latter might be unbalanced, as some pairs play. If you were to ask about the two sequences, and it was relevant, then you would allow an opponent to refuse to answer a question about the sequence that did not occur, because only the first call of it was "available". You correctly reject PeterAlan's definition of "turn to call", so it is surprising that you choose such a restrictive definition of "available".
It could also be argued that "You play strong in third, don't you?" is a question about North-South's basic system, and that question is always allowed, however you interpret "available".
I think the following Minutes of the Law Committee are relevant.
Minutes of a meeting of the WBF Laws Committee in Beijing on Friday, 10th October, 2008.
3 [
] 20F1 defines the manner in which, during the auction and play, a player may request and receive an explanation of the opponents prior auction. At this time he is entitled to an explanation only of calls actually made, relevant available alternative calls not made, and any partnership understanding as to inferences from the choice of action among the foregoing. (An alternative call is not the same call with another meaning for example, if the reply to an opponent is that 5D shows diamonds preference, any reply to a further question what would it mean if 4NT were Blackwood ? is given voluntarily and not as a requirement of Law 20F1.)
Minutes of Laws Committee meeting in Sao Paulo on Friday 4th September 2009.
7. A previous minute of the committee (10th September 2008, re Law 20F1) had been questioned. The law states that in response toquestions during the auction and play a player is entitled to be told about calls actually made, relevant alternative calls not made, and relevant inferences from the choice of action where these are matters of partnership understanding. The minute had clarified that an alternative call is not the same call with a different meaning. Thus if systemically after 4NT a response of 5D shows preferred minor the response here to Blackwood is not an available alternative call systemically and the player has no entitlement to information as to what it would mean.
Mr. Weinstein was inclined to the opinion that since a player is entitled generally (Laws 40A1(b) and 40A2) to know the opposing partnerships understandings arising from the calls, plays and conditions of the current deal, when asking questions during the auction and play he should not be restricted by the terms of the specific Law 20F1. The Secretary was of the opposite opinion.
The meeting engaged in a lengthy discussion and the Chairman decided that the subject should be continued when the committee reconvened.
Minutes of Laws Committee meeting in Sao Paulo on Tuesday, 8th September 2009.
13. The committee returned to the matter regarding Law 20F1 that was the subject of its minute dated 10th October 2008. After further discussion it was agreed to abide by the 2008 minute.