[blml] De Wael comments on 27 procedure.

[gesta at tiscali.co.uk]

Grattan Endicott<gesta at tiscali.co.uk
[following address discontinued:
grandeval at vejez.fsnet.co.uk]
*************************
"True luck consists not in holding 
the best cards at the table,
 Luckiest he who knows just when 
to rise and go home."  [John Hay ]
"*************************
(Herman De Wael)
It is clear that the things the IBer says are UI to the partner. 
It is also clear that the things the partner can deduce from 
the bid actually made, from the substituted bid, and from 
the law text, is AI.

What is less clear is if the AI leads to the UI being no 
longer present.

+=+ Where the basis of the IBer's bid has alternative
possibilities the partner is not entitled to guess which 
of them is the true explanation. His knowledge of the 
game will tell him what the alternative possibilities are 
and this is Law 16A1(d) information. If he is told 
that he is free to participate in the auction following 
the offender's choice of RC, and it is not the minimum 
legal bid in the same denomination as the IB he will 
know that the meaning of the RC is contained within  
the meaning of the IB and the auction continues under 
27B1(b).  If the denomination of the RC is the same 
as that of the IB at the lowest sufficient level he knows 
that the auction is continuing under Law 27B1(a). 
     This is all AI for the partner. What is not AI is the
information he derives from knowledge *which* of the 
alternative possibilities was the basis of offender's IB. 
Only if there can be no alternative possibility, given the 
bridge situation, is this knowledge AI. The basic example 
is 1H - P - 1H: this may be one of three possibilities,
response, overcall, opening, depending whether offender 
thought no-one had bid or thought that a prior bid was 
in a minor suit. But if the IB is 1C this can only have 
been an intended opening; it is knowledge the partner 
brought to the table that 1C can only be an opening bid.  
                          ~ Grattan ~   +=+