P_Marlowe, on 2024-May-02, 10:04, said:
Such a 2C opening are part of Polish Club / strong Club systems, sometimes with the option of
a side 4 card major, sometimes not, most of the time this will mean clubs are 6+, this is depend
on other parts of the system.
Our opponents played Blue Club, a strong Club system, with 1H / 1S showing 4+,
i.e. they would open 1H / 1S, even with longer Clubs.
I think Fantunes also used to play 2 level openings as natural, limited strength.
And 2NT is certainly Lebensohl, but in your auction it is coming from a passed hand,
that denied opening strength. And if you are below opening strength, you dont have enough strength
to force to game facing a normal T/O.
2NT Lebensohl allowes you to bid a major on the 3 level in 2 ways, via 2NT or direct via a jump.
This gives you the option to show a weak hand with the major, by bidding on the 2 level, intermediate
strength, going via 2NT, and game forcing strength jumping to the 3 level.
You can switch the meaning of the delayed bidding and the jump bidding seq.
Given that the passed hand status, game forcing strength option is no longer relevant, you only have
2 strength level to show, weak and intermediate / invitational.
Which may mean, that 2NT becomes natural.
If you want to have a more common seq., look at
1NT (1) - 2C (2) - 2NT (3)
(1) your NT strength
(2) natural
(3) Lebensohl
and what are the meaning of 2H, 3H via 2NT and 3H direct.
Depending on your NT strength, the fact that the 2NT has denied opening strength, may not imply, that he
does not have enough to force to game.
All this is theoretical as I am not playing enough bridge/don't have this detail of agreement in any partnership.
If I am treating the 2
♣ bid as a hefty weak 2 and I open all 12 counts and some 11 counts, a natural 2nt rebid by a passed hand seems to be a very small target.
If the natural 2nt rebid is rare, why not use 2NT to stop at the 3 level, leaving 2M as natural, 8-9(10) and more room to explore or correct to partners suit.
(Yeah, this is backwards)
If I have spades and 9hcp over P (2C*) X (P) and I use 3S to show this hand, partner is forced to bid 4H with a heart hand - but would have bid 2H over 2C with that hand.
I believe the meaning of my usual non passed hand leb responses are standard
2H to play
3H via 2NT invitational
3H direct gf
"And no matter what methods you play, it is essential, for anyone aspiring to learn to be a good player, to learn the importance of bidding shape properly." MikeH