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After an invitational nmf

#1 User is offline   jillybean 

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Posted Today, 09:29




MP 2 NMF
I hope you evaluate this hand as invitational.
Over a minimum response from partner do you like to invite with 3 or 2N?
Does 3 show 6, less points?
"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
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#2 User is offline   mw64ahw 

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Posted Today, 09:49

Nope - South is worth 4 14 total points, 7 mod. losers opposite a min 12hcp and 3-card support assuming no light club opening.
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#3 User is offline   jillybean 

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Posted Today, 10:05

Yeah, ok. Can you ignore the hand and answer the question?
"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
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#4 User is offline   jdiana 

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Posted Today, 10:18

Sorry if I'm committing the same sin as mw64ahw, but I'm not sure what the point of inviting is. Opener has already told you they have a minimum hand (11 to a bad 13) and 3-card support. (They would have bid 3 if they were at the upper end of their 12-14 point range.) So I think you just make a decision and ether pass or bid 4. I would also bid 4.
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#5 User is offline   mw64ahw 

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Posted Today, 10:28

Answering the question you can use any of the bids from 2 to 3 to invite now that a fit has been found.
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#6 User is offline   jillybean 

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Posted Today, 10:47

Let me rephrase this. :)



Over a minimum response from partner do you like to (re) invite with 3 or 2N?
Could 3 show 6, stretching the invitation?
"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
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#7 User is offline   P_Marlowe 

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Posted Today, 10:57

Hi,

3H is not inv., it is game forcing, showing slam interest.
2NT may or may not be inv., ..., assuming the 1NT rebid could
contain a 4 card spade suit, and you want to right side the contract,
although for simplicity I would again play 2NT as forcing.

The reason is simple: partner showed a min, if you found a fit with
exactly inv. values, you pass, playing happily 2H, maybe you make +1.

With kind regards
Marlowe
With kind regards
Uwe Gebhardt (P_Marlowe)
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#8 User is offline   jdiana 

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Posted Today, 11:07

View Postjillybean, on 2024-December-04, 10:47, said:

Let me rephrase this. :)



Over a minimum response from partner do you like to invite with 3 or 2N?
Could 3 show 6, stretching the invitation?

The first part of my comment was not hand-specific - it was more about my understanding of how to play NMF. But, after carefully re-reading this write-up from Karen Walker - https://kwbridge.com/nmf.htm - it looks like she recommends bidding 3H to invite game. I don't really get that because, in my mind, opener's 2H bid already said he would decline an invitation. But c'est la vie.
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#9 User is online   DavidKok 

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Posted Today, 11:51

There are several ways to play this. I'll share some questions and thoughts, to be answered by your partnership:

  • Does 1NT deny a 4c suit? It doesn't for me, in which case responder needs to ask for that with 4=4 in the majors. In return, this means that 2 does not promise a fifth heart. If 1NT denies four spades then 2 should always be 5(+).
  • Can 1NT ever contain a singleton in responder's major? This may make it unsafe to set trumps with a slammish hand with 6 of them, which might cause issues regarding negative inferences.
  • Does opener jump ever in response to 2? In some versions of NMF, opener's 2-level responses show a minimum. This gains opposite an invite, allowing you to stay at the 2-level, as well as gaining if responder was slammish facing a maximum but not a minimum (allowing for less information leakage on the way to game). Conversely, when opener jumps with a maximum and responder had slam ambitions, the preemptive effect is undesirable. When I played Checkback Stayman (not 2-way) we had the agreement to never jump.
  • If opener is going to commit to 3M on the 1m-1M; 1NT-? start, there are two routes to do it: immediately, and through NMF. At most one of these should be an invite, and possibly neither. I think it is sensible for the direct jump to set trumps and be a slam try, promising 6(+) cards. What are your agreements here? An extra complication is that, in my style, where 1NT doesn't deny 4 spades, so 2 can be 4=4 majors, a 3-5 heart fit isn't confirmed on 1-1; 1NT-2; 2-?. Therefore responder, with a slammish hand with exactly 5 hearts (remember: the direct jump to 3 showed 6(+) for me) needs a way to confirm trumps.

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