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Subject: Re: Shredder 8 question on KN's drop when endgame tables accessed?

Author: Dann Corbit

Date: 17:50:44 03/16/04

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On March 16, 2004 at 20:45:04, Richard Patterson wrote:

>Hello, I have noticed that Shredder 8 will seem to slow down badly when the
>endgame table bases are accessed at the end of the game but in the same setup
>Deep fritz 8 can access without a drop in the KN's. Any ideas on this ?  Thank
>you

Nodes per second are irrelevant.  Which one plays better is a far more
interesting question.

Probably, Shredder is making more use of the tablebase files.  If it is too
much, then the search may possibly slow to the point where pure alpha-beta would
be better.  On the other hand, it may be that Shredder will find wins that Fritz
will miss because of what it learns from the tablebase oracle.

A disk access is far more expensive than a bunch of in-memory calculations.
However, a tablebase hit represents perfect knowledge.  So it may be worthwhile.

It's a balance.



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