[WrecksVee]

Is it me or have the robots gotten worse lately?

So I did not copy the hand. The auction with me as Opener went 1♦-1♥-2♣-2N-3♣-all pass The robot failed to take a preference back to ♦ with four card support and a void in ♣. At least it was consistent so this silly result was repeated at other tables.

[Bbradley62]

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Where to start...
Doesn't 2♣ deny 3 hearts? I thought South would prioritize making a support redouble with 3 hearts.
If we like the 2N bid with the North hand, the description shouldn't say "balanced".
Clearly, North should not pass 3♣. I'm not sure what he should do, but pass is not an option.

I tried to find another thread with a similar problem, to help the programmers design a more global fix, but I couldn't find any. There must be some...

[iandayre]

I hope this did not happen recently with advanced robots. I realize that even if this was fixed, say, a few months ago, the fact that an blunder like this was possible 10 years or more into GIB's existence is hard to accept.

I have never seen GIB fail to make a support double when one was available, so yes, 2C denied 3 Hearts. The descriptions do not necessarily mention this, and I believe there have been examples where, due to the incomplete descriptions, GIB appears to "forget" that a previous call denied the ability to make a support double or redouble.

I would say that an invitational 3D is better than 2NT over 2C.

[iandayre]

Duplicate

[steve2005]

I can live 2N seen worst even from humans and may be only way to 3N.
Passing 3♣ is unforgivable. If a human partner pulled this I wouldn't been playing with them for a while.

[steve2005]

Bbradley62, on 2015-August-16, 12:53, said:

I tried to find another thread with a similar problem, to help the programmers design a more global fix, but I couldn't find any. There must be some...

I remember an earlier example but don't know when but within last 3 months.
should be simple math p shows 4+♣4+♦ you have 4♦ 0♣ you play in ♦

[johnu]

Technically, there is no such thing as common sense when it comes to GIB bidding. There are tables and trees of bidding rules that GIB consults (there are also to be some simulations for hand evaluations when making decisions about what contract to play). There should be some overall meta rules that tell GIB to take a preference instead of passing in a worse fit when the base programming comes up with a hopeless result like passing the 2nd suit with a void. The fact that GIB can pass in this situation means that either there isn't a meta rule, or there is a meta rule but it isn't being used due to a bug in the programming.