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Subject: Re: Two programming questions

Author: Pham Minh Tri

Date: 22:42:36 08/30/01

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On August 30, 2001 at 21:11:48, Bruce Moreland wrote:

>On August 30, 2001 at 18:53:56, Sune Fischer wrote:
>
>>Hi
>>
>>I see a lot of you printing principal variations (not the algorithm, but the
>>best lines of play) found in the searches. How do one obtain that information,
>>the alpha-beta only returns the score, not the moves?
>>Perhaps it is possible by saveing every move that sets a new alpha (resp. beta)
>>value. The move that exceeds the beta (resp. alpha) is not the one we want, but
>>the second best before that, right?
>>Now here's where I get lost I think, what happens after we've gone back up the
>>tree and then down a new branch to the same level as before. If a we get a new
>>alpha won't that mess up the last move we saved (global vars), and what if it
>>wasn't better?
>>Maybe this won't happen because these braches will be pruned off before that
>>occurs or what? Hmm I'm having some trouble grasping this part.
>>
>>I'm also looking for some kind of tutorial on hash tables, how to build them,
>>what to store in them etc. (a step by step guide really;).
>>
>>Thanks,
>>-S.
>
>http://www.seanet.com/~brucemo/topics/pv.htm
>
>bruce

Hi Bruce,
You just answer one of two his questions. How about question of hash table? Hope
that you could write / update a new page to answer him as quickly and well as
you did for the pv's one ;)



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