[Antrax]

1NT - (p) - 2♦ - (2♠)

Over a natural 2♠ what should 3♥ be? Is Lebensohl relevant?

[aguahombre]

A 2nt bid by opener in this scenario should be artificial with 4 hearts, IMO --- distinguishing between 3H and 2NT would be a matter of taste, one of the two being seriously strong in support.

While a cousin of Lebensohl or Good/Bad, I wouldn't name it as such.

[han]

More interesting is what 3m would show.

[Antrax]

Offhand I would guess a 5/6 card suit. Unless opener must X on all hands where he has a doubleton heart?

[aguahombre]

I refuse to give the opps freebee shots. Want to keep double as a strong suggestion that RHO has made a mistake.

[Cyberyeti]

han, on 2011-December-30, 05:12, said:

More interesting is what 3m would show.

To me 5m/3♥ with pass showing most hands with 2 hearts and X suggesting a penalty.

2N/3♥ are both raises, but no suggestion of Lebensohl.

[han]

Antrax, on 2011-December-30, 06:02, said:

Offhand I would guess a 5/6 card suit. Unless opener must X on all hands where he has a doubleton heart?

Responder has not shown any strength, it can't be right for opener to double on all hands with a doubleton heart.

I don't think that it is right to bid 3m on a 5-card suit either. You could play that 3m shows a 6-card suit, or play that it shows heart support and a good minor, for example xx AQx Axx KQJxx as an extreme.

[TWO4BRIDGE]

Antrax, on 2011-December-30, 01:57, said:

1NT - (p) - 2♦ - (2♠)
??

I think the only thing that would make sense for a bid now by Opener would be a Super-Accept ( Max w/4 cards Hts ).... since Responder's strength is unknown.
In other words: Super-Accepts ( SA ) ON over delayed interference ( as long as it would not take you past 3-trump ).

Thus, 2NT!/3C!/3D!/3H! would mean whatever you use that SA for w/o delayed interference... otherwise PASS.

[neilkaz]

aguahombre, on 2011-December-30, 06:07, said:

I refuse to give the opps freebee shots. Want to keep double as a strong suggestion that RHO has made a mistake.

Bravo ! And I continue to see the sickliest 2 level overcalls made on BBO go unpunished. The other day someone passed and then overcalled 2♣ red vs white on an aceless quacky 5332 10 count with QT8xx in ♣ and rather than bid 3nt after pard's supX when holding the rest of the hcp, I passed and collected 1400 when declarer missplayed but 1100 was cold which outscores 3nt by a wee bit. Time and time again people should go -500 or 800 on part score hands but the opps don't or can't X and endup struggling at the 3 level in a 5-2 or 4-3 fit (Sometimes missing 3nt)

[Antrax]

That makes sense, when I think about it. So the general principle is that responder should be the one to place the contract, and opener should focus on showing support or lack thereof so responder knows when/how to reopen?
I can envision logical (I hope) followups, but what can opener X with? Specifically, let's say responder is a weak 5431, what can he take out the X to that'll be safe? 2NT or 3M?

[Zelandakh]

An idea I have floated before is for X here to be optional showing 3 hearts and enough defence to defend 2SX should partner decide to convert. 2NT and 3H should show 4 hearts here - 2NT max and 3H min makes sense to me. That just leaves the 3m bids. If you play these as super-accepts after a pass then perhaps keeping the same structure is easiest. A good alternative is for these to show 3 hearts and a good 5 card minor as han has already pointed out.