jillybean2, on Sep 14 2005, 10:09 AM, said:
....
1♣ alerted and explained as 12+pc,4=h
1♦ alerted and explained as negat 0-6 (late)
South called director after first trick and said he would have doubled 1♦ if it had been alerted at the time.
I do not know when the alert was made.
I warned EW but let result stand - on the grounds that South did not take reasonable steps to protect himself. ie ask for more information.
your opinions please
jb
(1) Did east have an obligation to alert?
I think yes. If you think no, then stop.
(2) Was there damage b/c of late alert (if late)?
Yes, south could have doubled an artificial diamond bid to show interest in the suit.
What did east say about when alert made? Did east say it was timely?
There are additional complexities. Given artificial meaning of 1 club opening by west, I agree south should have been on guard for 1 diamond having an artificial meaning. But it gets a bit tiring to me (this isn't directed at you!) how every discussion about any bid seems to involve some opinions about how the non-offending side "should" have protected itself by asking what every bid meant.
There's also the factor, that if east had had diamonds (e.g. kjt4) and received a request for an explanation (wouldn't know whether N or S assuming done by clicking on the bid), that would "alert" east to the fact that either N or S had an interest (presumably length) in the diamond suit. That is, it would have given extra undeserved information.
So from south's view, clicking on the bid to request an explanation could actually give extra information to east about outstanding diamonds (that either N or S had length)!
Similarly, if I have an ace, I will sometimes refuse to ask for explanation of whether opponents are using normal or rkc blackwood (especially in an individual where they may be unsure). Because if I click on the bid for an explanation, that's as good as telling the opponent that there's an outstanding ace. And therefore I alert my own blackwood bids, else I'd be a hypocrite...