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Subject: Re: Engine woes

Author: Vincent Diepeveen

Date: 07:23:01 04/15/03

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On April 15, 2003 at 08:03:36, Nathan Thom wrote:

>My engine is giving me headaches :) Its performing pretty badly against test
>positions (even thought it can beat me!). I have concerns over the following
>statistics:
>
>1. The PVS search success ratio seems extremely high, of 180k attempts, only 9
>fail (ie value > alpha && value < beta).
>
>2. When writing to the hash table, of 50k writes 40k are lower bounds, 10k upper
>bounds, 20 exact.
>
>Does anyone else have any statistics for what I should be getting, or any
>suggestions where to look for errors???

what position and depth did you test?



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