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Another Random Robot Act of Kindness

#1 User is offline   uva72uva72 

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Posted 2014-July-12, 12:15

My link

Match points, ACBL robot tournament

Please note West's play to trick two.

Given the frequency with which this (baseless and costly play of one honor under another) seems to occur, it would be interesting to know if this bug has been taken on by the programmers.
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#2 User is offline   steve2005 

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Posted 2014-July-12, 12:53

let me take a guess as to the cause.

Gib runs simulations and comes to conclusion the result is the same no matter what card it plays, perhaps placing declarer with J

so then all Gibs are the same so it plays a random card.

I think this random action should be taken out of the program and just play lowest card. there are way too many gifts.



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#3 User is offline   Antrax 

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Posted 2014-July-12, 13:01

South psyched, showing 2 or less diamonds and a maximum of 11 HCP. That probably caused W to place E with some of S honors and definitely one more diamond, so unblocking the Q serves to put E on lead eventually and can't cost a trick.
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#4 User is offline   Bbradley62 

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Posted 2014-July-12, 15:34

The strength range given for 1N is reasonable, but many hands with three diamonds might prefer to bid 1N rather than 2.
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#5 User is offline   iandayre 

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Posted 2014-July-12, 20:34

I agree with Steve. GIB's random playing of honor cards and high spots helps declarer frequently, and very rarely helps its defense. It should be deleted from the programming.
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#6 User is offline   Antrax 

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Posted 2014-July-12, 22:21

It doesn't work this way. There's no line of code that says "hey, occasionally unblock an honor for no reason" in computer speak. You see how if GIB believes the bids made by south, the Q play is not illogical. So, how can you fix something that's not broken? Playing lowest always helps declarer a lot more than randomly playing between equals.
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#7 User is offline   karlson 

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Posted 2014-July-12, 23:56

More or less what Antrax said, but it does seem like we'd be talking about GIB's brilliant unblock had declarer's hand been Kxxx KQx Kx Qxxx.
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#8 User is offline   steve2005 

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Posted 2014-July-13, 07:41

My post may have been wrong about Gib playing random cards from the notes it says

"when it's forced to play equivalent cards in a doubleton, it will randomize them because of restricted choice"

From experience Gib seems to play random cards with something like T62. Can anyone verify that Gib plays random card in situations other than doubletons?



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