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Relay points GIB system

#1 User is offline   42 

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Posted 2008-April-23, 06:36

Hi all,
we often practise against the brothers GIB. Recently we/they had this hand and auction:

Scoring: IMP


auction (W = dealer):

pass pass 1♣ pass
1♥ pass 1♠ pass
2♠ pass pass 3♦
3♠ pass 3NT pass
4♠ all pass

One can click on GIB's bids and the explanation comes up.
3NT was explained as:
3+ C;3- H; 4-5 S; 15+ HCP; 15- points; likely stop in D, 7+ relay points.
We wonder what relay points are (the contract was 2 off).
Can anyone help, please?

___________________________________________

OT: Thx jillybean :) ♥
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#2 User is offline   ArtK78 

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Posted 2008-April-23, 06:41

I assume that 3♦ was bid by your side as a balancing bid. In that case, 3NT was a typical GIB lunacy.

As for the explanation, that makes no sense either. Never heard of relay points.
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#3 User is offline   ulven 

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Posted 2008-April-23, 06:51

Relay points means A = 3, K = 2, Q = 1.
"When I'm working on a problem, I never think about beauty. I think only how to solve the problem. But when I have finished, if the solution is not beautiful, I know it is wrong."
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#4 User is offline   42 

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Posted 2008-April-23, 11:00

Thx so far! :)

I don't quite understand this GIB: '7+ relay points' is certainly a correct message, but for what is this relevant? Did this thing want to go to slam? Since it is a machine, there must have been something within the bidding sequence which made it love its hand a bit too much :P
I admit that I have no idea in this case :)
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#5 User is offline   FrancesHinden 

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Posted 2008-April-23, 12:14

There's clearly something screwy if it can come up with "15+ HCP" and "15- points" when it has a 14-count...
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#6 User is offline   pclayton 

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Posted 2008-April-23, 12:42

GIB is fine in the early stages on an auction. It's card play is usually quite good, but I have seen it make some bonehead plays.

There's several areas where GIB just falls apart.

One is when either side balances. If you balance with a GIB partner, you will frequently be hung. GIB does not seem to differentiate between an auction like:

(1S) pass (2S) 3C

and

(1S) pass (1N) pass
(2S) pass (pass) 3C

Anothe other is cuebidding. GIB has problems making intelligent decision in a cooperative auction. I can't say I've ever been passed in a cue bid, but I wouldn't be surprised if it has happened.
"Phil" on BBO
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#7 User is offline   P_Marlowe 

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Posted 2008-April-23, 13:21

42, on Apr 23 2008, 12:00 PM, said:

Thx so far! :)

I don't quite understand this GIB: '7+ relay points' is certainly a correct message, but for what is this relevant? Did this thing want to go to slam? Since it is a machine, there must have been something within the bidding sequence which made it love its hand a bit too much  :) 
I admit that I have no idea in this case  :)

Hi,

GIB uses a database and simulations to decide which
bid to make.
The entries in the bidding database were not revised
for a long time. (*)
Due to those errors and due to the simulation aspect,
the explanation given does not always match, espesially
in the later stages.

And of course GIB will assume, that you play similar
as GIB, at least those assumption will be made in the
simulations.

(*) BBO has started a project to eliminate some
of the more serious errors.
I am not sure how far this project came.

http://forums.bridgebase.com/index.php?sho...371&hl=Ginsberg


With kind regards
Marlowe
With kind regards
Uwe Gebhardt (P_Marlowe)
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