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Clear bidding error Not sure any explanation needed

#1 User is offline   goffster 

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Posted 2021-April-03, 12:19

https://www.facebook...13948842&type=3
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#2 User is offline   sfi 

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Posted 2021-April-03, 14:44

I think Mike Passell is on to something with his assessment.
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#3 User is online   smerriman 

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Posted 2021-April-03, 15:33

Yeah, 4N is pretty awful. 6N isn't a database bid; basic GIB passes it like a shot. Just the usual simulation issues I guess (or maybe GIB is just smarter than us).
A better handviewer
Reverse engineering GIB, part 1: A treatise on the insanity of bidding simulations
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#4 User is online   smerriman 

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Posted 2021-April-03, 15:51

Interesting. GIB's definition of 4N is 16-17 HCP, 2-5 ♣, 2-5 ♦, 2-4 ♥, 2-4 ♠. Let's assume it also bids Stayman with a 4 card major (but I'll allow it to have 4333).

Quick sim of 500 hands:

13 tricks: 8%
12 tricks: 47.2%
11 tricks: 36.8%
10 tricks: 7.6%
9 tricks: 0.4%

Perhaps GIB is smarter than us after all.
A better handviewer
Reverse engineering GIB, part 1: A treatise on the insanity of bidding simulations
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