dburn, on 2011-March-27, 11:22, said:
An uncontested relay auction concludes: South 4♥; North 5♣; South 7♦; all pass.
West, on lead, asks several questions and is inter alia told: (correctly) that South has shown five diamonds and North four; (correctly) that 4♥ was keycard Blackwood with diamonds agreed; and (incorrectly) that 5♣ showed two key cards and the queen of diamonds (the actual agreement is "two key cards without the queen of diamonds").
West, who has three unguarded queens and a singleton trump, leads a diamond in the belief that this will be safer than any alternative - it cannot pick up his partner's queen, because his partner cannot have it.
As it happens, West could have led from any of his queens without affecting the result at all. Assuming that South did not pick up East's ♦Q105, which he would not do unaided, the contract would fail. Instead it makes, so the Director is summoned.
"If I'd been correctly informed, I would not have led a trump" says West. "No, you wouldn't", says the Director, and adjusts the score from EW-2140 (a bottom) to EW+100 (a top).
"Wait a minute", says South. "If I'd known partner didn't have the queen of diamonds, I'd have stopped in six, and I'd have made that whatever West led."
"Irrelevant", says the Director. "You must bear the consequences of your own failure to remember the system; but I must adjust the score on the basis that West made his opening lead with correct information."
You are the Appeals Committee. Do you:
uphold the Director's ruling? (as campboy, bluejak, gordontd, FrancesHinden and I would); or
adjust the score to EW-1370 in six diamonds, the result they would have obtained if North-South knew the system (as, presumably, pran would).
To see that the latter position is wrong, consider that if you believe it correct, you would also adjust the score to EW-1390 in six diamonds if the trumps had in fact divided 2-2. East-West could claim, justifiably according to pran, that this is the result they would have obtained "without the misinformation".
As described here I simply am not convinced by South's assertion that he would have stopped in 6♦ just because the ♦Q is missing. (An additional point here is that South did not bother to check the Kings but went directly to 7.)
If South can show a sound reasoning why his choice between 6 and 7 depended solely upon partner holding the ♦Q I might quite possibly listen to him, but I honestly believe that will be very difficult for him.