rhm, on 2012-April-07, 13:31, said:
It sounds to me that most poster believe it to be a sin to play 3NT with an 8 card or longer major suit fit.
I am not one of them, particularly at matchpoints.
Rainer Herrmann
This is not what we are saying. What we are saying is that the right way to get to 3N with an 8 or more card major fit is to start by showing your hand, and then see what partner thinks.
For one thing, there are plenty of hands where partner would probably raise to 4S opposite 18-19 bal with 4 spades, and yet would pass 2N. How about T9xxx Qxx x Kxxx. Surely we are all passing 2N with that? For most experts any bid over 2N is GF due to the lack of space. Are you driving a game now? After 1d-1s-3h = 4S 18-19 bal this is an easy raise. I think most experts play some artificial raise to deal with 18-19 with support now-a-days. Transfer walsh and strong club remove it from the diamond opener, else cheapest splinter of a GF 2N bid is fairly normal.
Secondly, what we are saying is that if you were to bid 2N with 4 card support, then this is not the hand. With a strong 4 card side suit and Jxx Qx in the minors, this is a disaster waiting to happen in 3N, when game could be trivial in 4S. Sure there are counter examples, but I doubt they really matter.
Finally, does north not have a fairly normal 3N bid over 3S in your example hand, to show a balanced hands with slow cards in most suits? After 1d-1s-3s-3n, if you play that to play (and if you think playing 3N with 4-4 and 5-4 fits is a winner, you should), I think south has an easy pass.
The physics is theoretical, but the fun is real. - Sheldon Cooper