Handling 2452 Shape after 1D opener
#1
Posted 2013-May-16, 12:24
i.e.
1D - 1H ; 2C - ?
2S seems like a very poor choice as we really preempt the auction, esp if partner now bids 3H or something.
Does 3D now show this type of hand?
#2
Posted 2013-May-16, 12:40
#3
Posted 2013-May-16, 12:45
At least in this auction typically if partner goes above 3D to bid 3H you will know he has extra values with 1354 (since he would raise with 1354 with a min opener directly). Though you do need to know what you do with 2254 and 3154 with no stopper over 2S which is also problematic (if partner could bid 3H on say xx Ax AKxxx Jxxx and also with x KQx AQxxx Axxx that might be problematic).
You could play some artificial here also I'm sure, this is the 2nd most preemptive fourth suit auction, but it's not nearly as bad as 1H 1S 2D 3C at least since having 2N available alleviates a lot of stress.
#4
Posted 2013-May-16, 15:38
#5
Posted 2013-May-16, 16:52
As JL says, we also don't find the 4SGF gobbles up useful space. If it were not G.F., then there could be annoying situations.
#6
Posted 2013-May-17, 00:39
dustinst22, on 2013-May-16, 12:24, said:
i.e.
1D - 1H ; 2C - ?
2S seems like a very poor choice as we really preempt the auction, esp if partner now bids 3H or something.
Does 3D now show this type of hand?
Your bidding problem on the second round of the auction illustrates why it's not a good idea to play an inverted raise as denying a 4-card major. A 2♣ rebid is not the only one to give you a headache. Suppose the auction goes 1♦-1♥-2♥. What do you bid now? Many play 3♦ as NF, but even if it is forcing, how will partner know that you are making a slam try in diamonds rather than probing with hearts agreed as trumps?
#7
Posted 2013-May-17, 00:43
#8
Posted 2013-May-17, 00:49
JLOGIC, on 2013-May-16, 12:40, said:
That's the solution with standard methods, of course. An improvement might be to invert the meanings here, playing 2♠ as any invitational hand with direct 3-level bids as natural and game forcing. In other words the continuations have similar meanings to the ones often played after 1♣-1♥-2♦.
#9
Posted 2013-May-17, 01:25
2♠ = 4+ clubs, invitational+
3♣ = 3+ diamonds, invitational+
3♦ = 5 hearts or 6 self-supporting hearts, game-forcing
3♥ = 6 less good hearts, game-forcing
3♠ = 3433, no spade stop, game-forcing
This solves another problem too: when responder has a game-forcing raise of a minor, he finds out whether opener has extra values.
#10
Posted 2013-May-17, 02:14
JLOGIC, on 2013-May-17, 00:43, said:
Could we use the first step to distinguish between balanced and unbalanced and make 2NT show hearts? So
1♦ - 2♦
==
2♥ = balanced
... - 2♠ = 4 spades
... - 2NT = 4 hearts
... - 3♣/3M = asks for stop
... - 3♦ = min, no major
... - 3NT = to play
2♠ = unbal, nat
2NT = unbal, 4 hearts
3♣ = unbal, no major, extras
3♦ = unbal, no major, min
3M = splinter
3N = club splinter
That would mean that we cannot stop in 2NT though. To be honest, it feels that if we include 4 card majors in the raise that we should also make it game forcing and move the invitational raise elsewhere. That makes everything much easier.
#11
Posted 2013-May-17, 12:47
JLOGIC, on 2013-May-17, 00:43, said:
Perhaps I should point out that I play that an inverted raise can only have a side 4-card major if Responder has a game force.
Opener's most common hand type is a weak NT, so that goes in step 1, which is played as 2-way. With some partners the second option is 18-19 balanced (as Zelandakh suggests - then 1♦-2♦-2NT = unbalanced with 4 hearts). With other partners I play the second option in 2♥ as natural unbalanced, leaving 1♦-2♦-2NT to show the 18-19 balanced hand.
After 1♦-2♦-2♥, Responder bids 3♦ or 2NT as invitational opposite a weak NT, or anything else as a game force (step 1 being a neutral relay)
With an unbalanced hand, Opener shows a second suit. Over this, Responder returns to 3♦ with a minimum or bids step 1 or 2NT to invite Opener to pattern out or show strength [can opt to use a formal relay structure here].
JLOGIC, on 2013-May-17, 00:43, said:
Why? If I knew 4th hand was about to overcall 2♠ or 3♣, I'd much prefer to have shown invitational or better with 4-card ♦ support than to have shown responding values with 4+ hearts.
#12
Posted 2013-May-17, 15:21
#13
Posted 2013-May-22, 09:07
The transfer solution is interesting but I'd only do that in the context of a system where we used a lot of 2nd round transfers and had a unified approach to them.