nige1, on 2016-August-29, 19:09, said:
Before leading, defenders asked for an explanation of the auction and were told "Acol, Natural". When asked to explain the auction, bid by bid, the 1N rebid was explained as "15-17", all other bids "Natural". South led a diamond. North called the director. North claimed E-W should disclose that diamonds can be longer than spades.
nige1, on 2016-August-30, 09:52, said:
No bid was alerted. We asked out the auction. Opponents said "Natural". We asked opponents to explain each bid. Opponents explained them as natural. I was interested in 2♦. e.g. whether it shows 4 or more cards? whether it's forcing? But I didn't because we're not meant to badger opponents about individual calls. What more would you do, Helene? That's what I feel!
nige1, on 2016-September-01, 14:29, said:
They might have no discussed agreement ... When an opponent asks about an auction. I still maintain that general "bridge knowledge" is no excuser. for failure to disclose.
Nigel, I've already said I think you're overdoing this. Let's suppose, as seems highly likely for the reasons already given, that your opponents do not have any specific agreements or understandings about the 1
♥-1
♠-1NT-2
♦ sequence, and look at exactly what you're complaining about.
- "North claimed E-W should disclose that diamonds can be longer than spades": If they have no specific understanding, on what basis is E supposed to disclose this about W's bid? Only on the basis of general bridge knowledge, the same as is available to you. W clearly hasn't got a hand he regarded as strong enough to push on to game even after the 1NT [15-17]/ 2NT rebid sequence from his partner, so won't have the values for a 2-over-1 initial response. A player of your experience - far greater than mine - is surely aware, if they think about it, that the ♦s might be longer than the ♠s in a weak hand on that sequence, especially as W had the opportunity to pass 1NT instead of introducing the ♦s on the next round. You have to have reasonable expectations. You're entitled to the opponents' agreements and understandings, but you can't expect to be given at the table every possible ramification of their sequence that they've never previously considered, and, as Paul has already pointed out, it would take forever if they tried to do this. There is a line do be drawn between disclosure (there's a hint in the meaning of the word) and being spoonfed analysis that you should be doing for yourself.
- "I was interested in 2♦...": Maybe you were, but according to your narrative S hasn't made that specific enquiry before selecting her opening lead. You don't get to ask until she has done so and dummy is about to be faced, so what difference does it make?
Finally, whilst the opening
♦ lead made declarer's task a little easier, it did not directly cost a trick and the defence still had time to establish and take all the tricks available to them.