[lycier]

While I play against basic Gibs today, I encountered a strange matter.

- While I played imps in my club table at BBO.

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Result : 4♦N+1

I found by chance that there is not definition on 4♦, so I should bid it to report to BBO. Note east Gib led ♣3.
- And then I opened teaching table to confirm it again.

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After 3♦ as a premptive raise, west Gib should bid 3♠ instead of keeping silence.
Result : 4♠E-1

- However I repeated this hand at the teaching table, I encountered a strange matter.

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Result :4♦N+2
Note this time east Gib led ♦K.
Gibs play same hand with diffenert leading and get diffenert result.
Just reporting.

[Bbradley62]

 lycier, on 2016-February-08, 06:52, said:

Note this time east Gib led ♦K.
Gibs play same hand with diffenert leading and get diffenert result.
Just reporting.

GIB frequently makes different decisions in the same situation; this is nothing to report. It should not happen in a tournament, where parameters are set to have GIB behave similarly at all tables, but it happens all the time in MBC. Why it would ever choose ♦K is another matter...

[Vampyr]

 Bbradley62, on 2016-February-09, 06:17, said:

GIB frequently makes different decisions in the same situation; this is nothing to report. It should not happen in a tournament, where parameters are set to have GIB behave similarly at all tables, but it happens all the time in MBC. Why it would ever choose ♦K is another matter...

Seems safe enough, since GIB knows you can drop it...