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Subject: Re: Chess Tiger -- Hash dilemma

Author: Michel Langeveld

Date: 13:18:48 08/23/00

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On August 23, 2000 at 14:30:20, Keith Conary wrote:

>I currently have an active account which runs Chess Tiger automatically on ICC
>and I've found that running it with the suggested hash table increment of 4-8M
>works well for fast times against computers only.  But I get several draws and
>losses to IMs and GMs with the small hash table settings.  After increasing the
>hash table size to 64M, I get the opposite effect, meaning I crush the humans
>and lose to the computer at 5 3.  Is there a medium that can be reached in
>tigers' settings to balance the performance between humans and computers?
>
>Thanks
>
>Keith

I think you loose with large hash on fast TC more against computers than humans
because it takes time to fill hash. This time is only well spend if the stored
hash positions are also used. On short time the chance that you use most records
 is not very likely.

Since humans move slowly than computers on fast tc's you will also win more
against them... (You can also ponder longer against humans).

I noticed the same problem with using tablebases. It takes time (i/o, etc) to
read tablebases. So althoug I play perfectly I sometimes loose on time with my
program.

Michel



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