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Subject: Re: Neverending story with incomplete tablebases

Author: Dieter Buerssner

Date: 09:12:37 08/14/03

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On August 14, 2003 at 02:51:36, Johan de Koning wrote:

>On August 13, 2003 at 17:53:30, Dieter Buerssner wrote:

>>What are the other good reasons for clearing TTs?
>
>1. Predictability
>   IMHO an engine should just search when a search is needed.
>   After all it is a tool, not a living creature.

Thanks for you answer. All more or less points, I could imagine. I thought, you
would give perhaps one totally different point (after all, you also use very
small TTs compared to other programs in your engine, if we can trust what we
heard here - 32 or 64 Mb in Leiden this year).

This first point, I don't get however. What has searching when needed to do with
clearing of TTs?

>2. Reproducibility
>   Playing and watching games is the best way to spot funny behaviour.
>   Not being able to find the cause of this behaviour is pretty frustrating and
>   may leave unintended features unnoticed.

That indeed sounds funny :-)

>5. Pondering
>   If an engine has pondered the wrong move, the TT will be overwritten with
>   positions that are either useless or have the wrong bound.

Why should overwriting be a problem. Sure, it will be filled with a lot of
useless info.

Regards,
Dieter



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