GIB bug

[Cascade]

This occurred at a teaching table with GIB sitting east west and me sitting north south.

 

Hand

 

Gib cue-bid after pre-empting and its Gib partner passed.

 

Also I was looking at hands for the auction (3♠) 4♥ (4♠) more generally. I notice as well that when fourth hand bids the Gib preempter doubles very freely.

[johnu]

GIB East missorted its hand and thought it had the 18+ HCP that 4♠ supposedly showed. After realizing the misbid and hoping to avoid a doubled slam contract, East quite properly passed the cue bid to keep the bidding low and avoid the penalty double. IMHO, a good recovery by East. Well done.

[Cascade]

Here is an example of Gib doubling

 

Double

[nige1]

[hv=pc=n&sn=cascade&s=ST6HQ85DQ543CAQ92&wn=Robot&w=SKJ98752HAT3D87C5&nn=cascade&n=SAHKJ762DK96CKJT7&en=Robot&e=SQ43H94DAJT2C8643&d=w&v=o&b=136&a=3S(Preempt%20--%207+%20%21S%3B%205-9%20HCP%3B%20%21SQ%3B%206+%20total%20points)4H4S(1+%20%21S%3B%2018+%20HCP%3B%2019+%20total%20points)D5H(Cue%20bid%20--%201+%20%21C%3B%201+%20%21D%3B%207+%20%21S%3B%209-%20HCP%3B%20no%20%21CA%3B%20no%20%21DA%3B%20%21HA%3B%20%21SQ%3B%2011+%20total%20points%3B%20forcing)PPP&p=H6H4&c=3]400|300|

As JohnU points out, the GIBS are using different systems:

GIBEast thinks it's raising preemptively but

GIBWest thinks GibEast is showing 18+ HCP

[/hv][hv=pc=n&sn=cascade&s=SK5HA93DKQJT54C32&wn=Robot&w=SAQ98643HT7D976C4&nn=cascade&n=S2HKQJ86542D2CAKJ&en=Robot&e=SJT7HDA83CQT98765&d=w&v=o&b=200&a=3S(Preempt%20--%207+%20%21S%3B%205-9%20HCP%3B%20%21SQ%3B%206+%20total%20points)4H4S(1+%20%21S%3B%2018+%20HCP%3B%2019+%20total%20points)5HD(7+%20%21S%3B%205-9%20HCP%3B%20%21SQ%3B%206+%20total%20points)PPP&p=SJ&c=11]400|300|

Again GIBWest thinks that GIBEast has shown a mountain.

If the robots could share and understand the same FD description of their system, then this sort of discrepancy might be avoided.

 

[/hv]

[steve2005]

it just shows how ridiculous Gibs defaulting to pass when cant make a decision is.

[zhasbeen]

it just shows how ridiculous Gibs defaulting to pass when cant make a decision is.

 

So, where are we with all this? Evidently there is no fixing a problem once it is clear that there is one. Will the programmers need to start from scratch, is BBO looking for a new robot, or what? Has anyone heard anything?

 

Pretty embarrassing for BBO to have this happen at a teaching table, of all places.

[jdonn]

I am suggesting a new rule where when GIB opens with a preempt, it can't bid again after partner does nothing but raise and/or double the opponents. Maybe there should be exceptions, but I think that would be fine.

[zhasbeen]

I am suggesting a new rule where when GIB opens with a preempt, it can't bid again after partner does nothing but raise and/or double the opponents. Maybe there should be exceptions, but I think that would be fine.

 

Sounds like best solution. Keep your mouth shut after making a preempt unless you are asked (that includes doubling)

[virgosrock]

I am suggesting a new rule where when GIB opens with a preempt, it can't bid again after partner does nothing but raise and/or double the opponents. Maybe there should be exceptions, but I think that would be fine.

Sounds good. (though I have not encountered GIB bidding again after preempting.

 

vrock