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Does the 2NT rebid exist at all?

#1 User is offline   helene_t 

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Posted 2022-January-08, 08:57

The auction
1M-2m
2NT
is explained as 12-14 balanced when I use it myself playing the GIB system, but it seems to me that GIB never uses that bid. It always rebids 2M.

Is this really so? Or does GIB actually rebid 2NT with certain hands?
The world would be such a happy place, if only everyone played Acol :) --- TramTicket
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#2 User is offline   smerriman 

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Posted 2022-January-08, 13:38

I believe you're correct and it doesn't exist. Even with 65432 AQT KJT KT it'll rebid 2♠.
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Reverse engineering GIB, part 1: A treatise on the insanity of bidding simulations
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#3 User is offline   nullve 

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Posted 2022-January-08, 19:33

 smerriman, on 2022-January-08, 13:38, said:

I believe you're correct and it doesn't exist. Even with 65432 AQT KJT KT it'll rebid 2♠.

And the basic robot 2♥ with QJT 65432 QJT AK.
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#4 User is offline   helene_t 

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Posted 2022-June-14, 03:41

After intervention it appears to exist. In a free daylong I had this auction
1♠-(p)-2♦-(2♥)
2NT

explained as 12-17 points with a heart stopper and 5-6 spades. It happened to have something like AKJxx-AQ-xx-Jxxx.
The world would be such a happy place, if only everyone played Acol :) --- TramTicket
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#5 User is offline   pigpenz 

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Posted 2022-June-15, 14:54

most of the times when I use them they always rebid 5 card major with a minimum
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