campboy, on 2012-August-22, 04:15, said:
You keep suggesting that 16B requires the player to choose an LA, but it does not. He is merely prohibited from choosing any call suggested over an LA. For me there is no conflict: 73C requires him to bid 1NT and 16B does not prohibit this because it is not suggested over pass, no matter which subset of the two you consider to be LAs.
The highlighted sentence is not what the law says, although it is the recommended practice. The law
says he's not permitted to choose a call f
rom amongst the LAs if it is suggested over another LA. The law does not say anything about "ilLAs" (see below).
Vampyr, on 2012-August-22, 05:08, said:
Obviously this is the only sensible way to rule, but again it is custom and practice rather than following the Laws as they are written, since "may not choose from among logical alternatives one that..." is simply not clear, and can be interpreted in any number of ways. A near-universal interpretation has been agreed, but this practice is, if I may use a word in its legal sense, unsafe. The fact that Law 16 is not clear in its own right and must be interpreted means that all kinds of silly interpretations may be used, and no one can say categorically that they are wrong.
barmar, on 2012-August-22, 05:12, said:
This is the first time I can recall someone saying that "may not choose from among logical alternatives one that..." is unclear. It's not always easy to determine the LAs or which were demonstrably suggested, but the intent of the Law seems pretty clear. What are the differing interpretations you can think of for that phrase?
The law is perfectly clear, as Barry says.
Vampyr, on 2012-August-22, 05:51, said:
The two chief questions have been discussed in these forums quite a lot:
1. If all LAs "could demonstrably be suggested" is the player required to make a call that is not an LA (or be damned if he does, etc)? (and even the word "could" is a problem -- is it "could conceivably"? "could often"?
2. And the flipside, is the player permitted to not choose any call at all from among logical alternatives but instead make an "ilLA"?
#2 is the rub, and is why Grattan Endicott told me some years ago that the law should not be read literally, but instead read as if the word "logical" were replaced with "plausible". Then you can argue that the "ilLA" is a "plausible" alternative, because the player chose it, and if it could demonstrably have been suggested, etc., we can adjust the score.
Trinidad, on 2012-August-22, 06:41, said:
You are missing an important part of Law 16B:
In order to be able to demonstrate that the UI has made an LA more attractive than another, you will have to come up with a ranking for LA's: Which one is most attractive, given the UI? Which one is second, etc.
Two cases are possible:
- The UI did not make any LA more or less attractive. => No LA is suggested over another and the player may chose freely.
- The UI did make one or more LAs more attractive. In that cases there always is at least one LA that is made least attractive. This is the LA the player must chose/these are the LAs the player may chose from. A choice for another action "could have been demonstrably suggested" over this/these LA(s) and is not allowed.
It is simply not possible to demonstrate that the UI made all LAs more attractive than some other LA. One needs to be least attractive. Therefore, a TD (or anyone else) will not be able to demonstrate that a choice for this alternative "could have been suggested" by the UI.
As to "could": It is not "could often", nor is it "could conceivably". It is "could demonstrably", i.e. the TD has to demonstrate (proof) that the UI did actually make the chosen action more attractive than an other LA, and that, therefore, the choice for this action "could demonstrably have been suggested" over the other LA by the UI.
Rik
Yep.