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declarer's play low ruff?!

#1 User is offline   skorchev 

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Posted 2011-March-13, 17:00

ruffed low a diamond in obvious situation ... cost me about $10 :D

http://tinyurl.com/633eytk
BE COOL!
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#2 User is offline   cloa513 

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Posted 2011-March-14, 21:16

View Postskorchev, on 2011-March-13, 17:00, said:

ruffed low a diamond in obvious situation ... cost me about $10 :D

http://tinyurl.com/633eytk

Especially when ruffing high no matter what the layout would have cost nothing- so much for its simulations.
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#3 User is offline   ahydra 

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Posted 2011-March-21, 15:23

Yea, first priority should surely be to see if there's a no-loss play?

ahydra
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#4 User is offline   barmar 

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Posted 2011-March-21, 22:14

I don't think GIB knows how to find no-loss plays. It would have to deal out all the billions and billions of combinations of opponents' cards and simulate the play of each of them.

#5 User is offline   ahydra 

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Posted 2011-March-22, 16:03

Nah - for a start, use of "touching cards are equal" and similar rules would cut down the number of possibilities quite significantly.

Besides, in a situation like this, you say

- 3 trumps left, i have KQJ10

- assume the worst, I need 3 to draw trumps

- thus I can afford to use the K/Q/10 to ruff

- ruffing high never loses, whereas ruffing low can

- therefore I ruff high

It's only when GIB suspects he might lose trump control or whatever that he needs to start simulating.

ahydra
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#6 User is offline   barmar 

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Posted 2011-March-23, 00:40

You're talking about replacing its currently simulation-based algorithm with artificial intelligence. That's a complete redesign of the program.

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