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Subject: Re: How accurate are tablebase hits with 5-9 pieces & only 4 man installed?

Author: Uri Blass

Date: 06:49:30 10/07/00

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On October 07, 2000 at 04:18:19, Terry Ripple wrote:

> I have up to and including all 4 man tablebases installed on my hard drive and
>i'am curious when i begin to see hundreds and up to thousands of tablebase hits
>at certain times of the endgame when there are still 5 and up to 9 pieces still
>on the board, if i can begin to trust some of this analysis, or is it only
>accurate when the game reaches 4 pieces left on the board?
>
> I know an average amount of endgame knowledge and see that even when i have
>more than 4 pieces left on the board that the analysis is correct when i'am
>getting alot of tablebase hits, but some very complicated endgames when there
>are more than 4 pieces on the board and i'am getting alot of tablebase hits
>showing i don't know if i can trust this analysis at that point of the game!
>
>How many tablebase hits determine how accurate the endgame analysis is? Do you
>need several thousands of hits to say it is now more accurate? I hope i'am
>getting my point accross!

The hits are 100% correct but you cannot be sure that the analysis is correct
even if there are thousands of hits.
It is possible that there is a win that does not involve trading to a 4 piece
endgame and tablebases hits are not going to discover it.

Uri



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