jdonn, on Dec 7 2008, 04:15 PM, said:
- Since when is there any space between serious and nonserious slam interest? Isn't your choice (let's say when spades are trumps) generally between showing one with a 3NT bid or the other with a cuebid? I don't believe it's possible for one to be an overbid and the other to be an underbid at the same time.
- Given that you want 3♠ to be a cuebid, have you considered switching 3♠ and 3NT so that 3♠ shows serious (or not) slam interest and 3NT is a spade cuebid by either player?
As to the first, I can agree that it makes sense to actually treat 3♠ as a double-fit bid and 3NT as a call that shows extras without ability to make any other cue (hence, COV in hearts and spades). Where I think this fails is actually a bit more obscure, namely in that you lose a lot of options as to extremely cooperative actions. In other words, perhaps the use of 3♠ as a double-fit indicator, IMO, creates [--this much--] definition when there is no double-fit, whereas skipping that restriction on 3♠ enables [-------this much-------] definition, and I personally think that the difference, whatever that is, outweighs whatever perceived gain there is to showing the double fit, as I cannot even fathom how that double fit showing is worth much if anything at all.
On the second, I am not opposed to switching 3♠ and 3NT, in principle. In this auction, though, the question is somewhat strange. As it currently is (3♠ is just a cue), Opener will tell is he is serious or not, with that information about the spade card available, and Responder will only be able to express immediate seriousness or lack thereof if he also lacks a spade card. The switch would allow Responder to express seriousness or lack thereof whether he has the spade card or not, but he would only cue the spade card if he does not have serious interest. A rough estimate of the sums suggests that keeping 3♠ as the cue and 3NT as the serious call is best, because the cue is so critical. Reversing order stresses "seriousness" before the presence or lack of that spade card. So, in this specific event, I don't think switching works. If a spade cue were a cue of a side suit, in some other auction, then reversing the meanings makes more sense.

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