Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Is having _all_ tablebases better than having just _most_ of them?

Author: Peter Kasinski

Date: 11:45:15 01/23/01

Go up one level in this thread


On January 22, 2001 at 15:54:32, Robert Hyatt wrote:

>On January 22, 2001 at 12:52:04, Peter Kasinski wrote:
>
>>
>>I am trying to understand the impact of _not_ having some of the tablebases on
>>programs like Crafty or Deep Fritz.  Loading K+Q+Q+R vs K on my hard disk seems
>>almost frivolous. Would it weaken the program if some of these _clearly always
>>won_ cases were not present?
>>
>>thanks,
>>PK
>
>It is better to have _all_.  Crafty calls Eugene's probe code when the number
>of pieces on the board drops to some value (5 if you have any 5 piece files
>available).  If you don't have that file, I call his code, he returns "failure"
>and we keep searching.  If you have them all, then _every_ call will be
>successful and it is more efficient...

I understand. But in that case, how about the current 6-man files. Does it make
sense to use these at all?  As soon as Crafty reaches that stage it will start
probing the 6-man tablebases - which at this stage will be a futile attempt in
_most_ cases...  Am I right?

thanks,
PK








This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.