smerriman, on 2019-October-29, 22:32, said:
I don't think 'suggests' is the right word. Neither of those suggests opening 1S to me.
There is some very good statistical analysis online that suggests opening 1NT with 5
♥(332) is a winner whereas opening 1NT with 5
♠(332) is a loser. There are sometimes systemic reasons that override that point but it is simple logic that holding spades makes opening 1NT less desirable. That is the point that Helene was making and it is a valid one.
As someone who has moved from a style as a junior of never opening a hand 1NT with a 5 card major to a preference for always opening such hands 1NT and making the 1M openings always unbalanced, it is probably not surprising to posters that know me to hear that I like the 1NT opening on this hand. That said, I do not think you will lose very much, if anything, from a style that opens such hands with 1
♠. If the majors were reversed then I think the case for opening 1NT is much stronger.
As far as 1NT responses go, my preference when playing the above style for 5332 hands is for a method based around 2
♣ being Puppet Stayman. It is true that this offers more opportunities for a lead-directing double then regular Stayman but this does not in practice seem to be such a big issue at the 2 level as the 3 level, which is what the majority of ordinary Stayman pairs tend to prefer. Crawling Stayman is another loss of course but the truth is that you can transfer with 5-4 hands and lose little, while the Exit Stayman hands turn out to be a wash, since the shapes required for its use change but the expected returns do not. In the end I suspect Adam's point #3 ends up being quite important in choosing a response structure. The key is that everything fits together to create a harmonious system. Whether you gain on one set of hands or another is not so important as the overall system effect and the comfort that the players have of playing within their system choices.