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MOSCITO competitive auctions How does opener resolve major/minor suit length?

#21 User is offline   Zelandakh 

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Posted 2021-May-06, 11:34

View Posthrothgar, on 2021-April-27, 14:05, said:

MOSCITO used an 11+ - 14 HCP 1NT opening. So the one thing that the 2N rebid doesn't need to show is a balanced hand with the Spade stopper.

There are a number of possible schemes that 2NT might show.
However, I don't think that clarifying major suit length is particular useful.

I think that any of the following would work better

1. Using 3m as natural with 2N as some kind of good / bad scramble
2. Use 2N as natural, showing a spade stopper and suggesting 3N

How does this look?

1 - (2)
==
X = GF relay ("show me your shape")
... - 2NT = 5+, 4+
... - 3 = 5+, 4+
... - 3 = 6+
... - 3 = 4, 5+
... - 3 = 4, 5+, no stop
... - 3NT = 4, 5+, stop
2NT = competitive relay ("show me your second suit")
... - 3m = 4+m
... - 3 = 6+
3 = constructive with 3 (since you wanted this; an alternative would be GF with a 6+ minor)
3 = constructive raise
3 = competitive raise
--

It seems to me that one major thing that sets this auction apart from natural ones is that Opener will not have length. That ought to make us thing about a X somewhat differently but exactly how best to re-organise I am not so sure.
(-: Zel :-)

Happy New Year everyone!
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#22 User is offline   hrothgar 

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Posted 2021-May-06, 12:53

Couple quick comments

1. Opener could have 4 Spades (at least in more modern versions of MOSCITO)
2. I think that GF auctions are too rare to use X to establish a GF
Alderaan delenda est
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