the hog, on 2014-May-04, 17:57, said:
Well it is a pity for you that YOU have to invent a convention like this.
I'm not normally credited with the Unusual 2N, but thanks.
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Others who discuss sequences with their partners already play 2NT as any big 2 suiter.
I'm sure some of them do. I don't believe for a second it's universal, and neither do you. So let's focus on the interesting case when we're not playing it.
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Just a question - personally I don't necessarily see anyone running after a double, and after you have cashed your Ds, what are you going to do?
I'm going to lead a D, then look at the table, the state of the match, and make a decision. Yes, if it gets that far I'll have done badly in expectation. I still do not believe the chances of the X being passed out are much higher than 10%.*
Let’s look at the actual hand, which I believe you advocate doing whenever it helps your cause: responder has at least 6Cs and at most 6 points, so he’ll pull. I now have a suit to cue, so I can keep doing so until advancer admits to having a D side suit, after which I can bid 7.
If by some miracle he doesn't pull, P will, which makes life harder, but no more so than it was before I Xed.
* Actually, I’m struggling to think of
any lie of cards where an X is odds-on to be passed out. Someone at the table has 5Cs. If responder has them that should be an auto-pull, if P has them I’d expect him to pull unless he has decent values (in which case, as responder, even with a 4333, given a 0-2 count I’d expect him to wriggle out of desperation), if opener has them and receives a non-forcing pass (if his P had a natural XX available), he’s likely to bid them unless they’re particularly weak – in which case chances are P will be getting in with them to return a S.
Much the same goes for the H suit unless it's exactly 444 in the other hands.