[blml] Fwd: Decimal HCP ranges.

[Tim West-Meads]

"Collins Williams" wrote:
> 
> What all of this about high card point ranges seems to overlook is 
> that some, (are they called Zonal Authorities?). 

System regulations are matter for the Sponsoring Organisation which might
the WBF (for a world event), a Zonal Org/National
Authority/County/District/Club/Charity or even an individual.

> the ACBL for example, regulate conventional 
> responses to 1NT openers based on the width of the range (presumably
> measured in Work HCP).
> 
> How is a TD to interpret such a regulation in the face of a 
> disclosure of a pairs NT range as a probabilistic measure?

The TD makes a judgement as to whether the range of hands covered by the
probabilistic agreement is wider than the range permitted.
For example if the permitted range was 5Hcp and the probabilistic range
included 5% of 11 and 17 counts and only 15% of 12/16s I'd judge it to be
within legal tolerances (it covers many fewer hands than a Walrus 12-16).
 
> Or is it the view of people who are trying to get such information 
> into disclosure that such a regulation is not legitimate?

Such regulations are legal - reprehensible and morally abhorrent IMO -
but legal.

Tim