[calm01]

http://tinyurl.com/7vbjg8o

Learning to pass on weak misfit hands comes to beginners, often slowly, after several expensive doubled losses and encouragement from patient partners.

I suspect GIB has no equivalent learning skills and human encouragement over time so just needs to be reprogrammed to recognise such hands and be instructed to just pass.

[barmar]

Yeah, GIB's hand evaluation doesn't discount shortness in partner's suit. So it sees that hand as being 9 total points, which is enough for a 2♥ bid.

This is the kind of hole in the rule base that simulations are supposed to help with. In this case, it's on the borderline: 5 out of 11 simulations bid 2♥, 6 pass.