mycroft, on 2011-March-17, 17:26, said:
Besides it being Reveley (it is possible to get to the same contract in some auctions, but not this one, if you think that any action is suggested over pass for West by the UI (reasonable), and that pass is logical (also reasonable, if West was willing to let them play 4H the first time by not bidding 5C the first time)), the result of the weighted score is incorrect.
Assuming the weighted score was a legal ruling, it is not:
- 50% of 4H=, +620 + 50% of 5Hx-1, -200 = +210 (okay it is a bridge score, but nobody's making 11 tricks in NT on this hand); it is
-50% of 4H=, +620; and
50% of 5Hx-1, -200,
both of which are scored as normal, and the generated scores are weighted and added to get a result.
So, if it was Matchpoints, and +620 would score 18/24, and -200 would score 3/24, then their result would be 10.5. At IMP-scored teams, if the other table was 5Cx-1 +200, then it would be 50% of +9 and 50% of -9 is zero IMPs (very different from +210 - +200 = +10 = zero IMPs!)
How the rest of the field gets scored is according to the White Book, and gets complicated after more than one of these weighted results on the same board. But that's what computers are for.
Maybe I'm missing something, but if 5
♣ is judged to have been a violation of Law 16, then 5
♥, doubled or not, is never going to happen as far as the ruling is concerned. As I read Robin's post, and if I'm reading it right I agree with him, the only weighting of the scores would involve a judgement that a contract of 4
♥ might have more than one possible outcome. So you might get
50% of 4
♥ making (+620) plus 25% of 4
♥ making 5 (+650) plus 25% of 4
♥ down 1 (-100), or some such. I agree that you need to IMP each of these results against whatever happened at the other table, and weight the IMP scores. By my calculations, your 5
♣X-1 (-200, not +200, it's your teammates in clubs) at the other table would result in 0.5*(9 IMPs)+0.25*(10 IMPs)-0.25*(7 IMPs)=4.5+2.5-1.75=5.25 IMPs.
E's Pass of 4♥ was very slow, and led to N asking for a ruling on W's 5♣ bid. The ruling handed down was 50% of 4♥= & 50% of 5♥X -1; N/S +210.
My specific question is about the application of the Reveley ruling guidance in 16.3 of the White Book. That's written in black and white terms of a call being "disallowed because the TD judges that an illegal alternative was chosen when unauthorised information was present", but here, in effect, the TD has decided that 50% of the time 5♣ was disallowed and 50% of the time it wasn't. Enlightenment, please!