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Second hand low

#1 User is offline   Bbradley62 

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Posted 2015-January-08, 11:14

I know... GIB decides it doesn't matter and plays "randomly", but there's no reason to make it easier for me to pick up the 5-0 split.

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#2 User is offline   1eyedjack 

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Posted 2015-January-08, 11:53

I recall that Uday once reported that it uses an (ahem) intelligent algorithm for card play but only kicking in at trick 3 or so.
Psych (pron. saik): A gross and deliberate misstatement of honour strength and/or suit length. Expressly permitted under Law 73E but forbidden contrary to that law by Acol club tourneys.

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#3 User is offline   iandayre 

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Posted 2015-January-08, 13:09

And I was just thinking that I had not seen any of these helpful (to the declarer) high spot card throwaways on defense recently. But actually this is a slightly different problem. GIB almost invariably splits honors or spot cards where its only/best chance to take more tricks is to play low. But this is a problem that I concede would be hard to fix, there is no scientific substitute for bridge judgement to know when a split is necessary and when it is suicidal.

And I don't suppose there is a way to teach GIB that its opponents are not playing double dummy.
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#4 User is offline   johnu 

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Posted 2015-January-08, 14:21

There have been other discussions about "random" GIB plays that shouldn't matter double dummy based on 100% accurate bidding. I still say make GIB always play the lowest card (or one of lowest of equals) when just following suit in the absence of more sophisticated card play. Maybe an advanced or expert declarer may be able to make a better play based on that knowledge some small percentage of time, but so what? Certainly it is better than GIB throwing away probable tricks for no good reason.
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#5 User is offline   Stephen Tu 

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Posted 2015-January-08, 14:27

 1eyedjack, on 2015-January-08, 11:53, said:

I recall that Uday once reported that it uses an (ahem) intelligent algorithm for card play but only kicking in at trick 3 or so.


Only for advanced bots and only as declarer. For defense it is still assuming double dummy. Getting these things right require defenders to simulate a single-dummy declarer which is apparently too slow.
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