[goffster]

I was asked to show hands where robot is making unforced errors,
so I am creating an incident for each hand.

http://tinyurl.com/zfdlagm

Robot could have simply passed 2CX

instead, it redoubled to show a balanced hand (which it does not)
and receives a deserving bloodbath when its partner feels obliged
to bid 3D (which is questionable, even given partners supposed balanced hand)

[lycier]

Here is your hand.

---

Here I checked and replayed this hand,it normally goes :

---

Result : 3ntS=

My conclusion:
1- I never think this is a unforced issue.
2- What's the real meanings of East Gib's redouble? I think this redouble should show to support all suits unbid with 8-11 HCP( instead of 8-11 TPs) in the balanced hand.
I guess this issue mainly comes from a bug unknown to make East Gib a wrong redouble.
Logically if this redouble is a reasonable auction, 3♦ should also be a smart action.
3- I also think there are some issues on Gib CC after interference on opening 1nt hand.

[1eyedjack]

lycier, on 2016-July-16, 17:52, said:

Here I checked and replayed this hand,it normally goes :

How do you conclude which of the two auctions is "normal"?

[lycier]

Don't know what you said, I meant it is a normal sequence in my hand.

[1eyedjack]

Sorry, I thought you were claiming that your sequence was the "normal" one adopted by Gib, AS OPPOSED to the (by implication) ABnormal auction presented by the OP.

Now that I look at it again, I think that your first response is fundamentally flawed because you have the dealer in different position, so the entire discussion is irrelevant.

[Bbradley62]

1eyedjack, on 2016-July-17, 23:24, said:

Sorry, I thought you were claiming that your sequence was the "normal" one adopted by Gib, AS OPPOSED to the (by implication) ABnormal auction presented by the OP.

Now that I look at it again, I think that your first response is fundamentally flawed because you have the dealer in different position, so the entire discussion is irrelevant.

Ignoring the mis-marking of the dealer for a moment... Lycier habitually reruns hands using four basic GIBs, to determine the "normal" auctions, i.e., auctions using strictly GIB's bidding rules. The allows us to separate "bidding tree" errors, which should usually be easily-correctible by the programming staff, from simulation issues, which are more complicated.