wyman, on 2011-December-15, 21:29, said:
is 5d actually demonstrably suggested by the ui?
south has clubs, north can be thinking about x'ing, bidding clubs, whatever.
Law 16 disallows logical alternatives that have been
demonstrably suggested.
Law 73 has in my opinion a stronger requirement to carefully avoid taking advantage.
It seems clear here that south was attempting to take advantage of the additional information even if his final decision was a bad one. This needs to be discouraged.
Like David I would give a weighted score for east-west between 4H= and 4H+1. Given the information provided I would weight 4H more strongly. I believe that I am supposed to err on doubtful points in favour of the non-offenders. So if say 10% made 11 tricks then I might actually be inclined to give 15% or 20% for that result and the remainder for 10 tricks.
If a weighted score is not an option then I am inclined to give the non-offenders the most favourable result of 11 tricks. Otherwise I am necessarily punishing them as they have lost the opportunity to make 11 tricks as some declarers did.