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Subject: Re: Could someone explain this?

Author: Terje Vagle

Date: 01:36:44 08/16/01

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On August 16, 2001 at 03:56:31, Uri Blass wrote:

>On August 16, 2001 at 03:16:59, Terje Vagle wrote:
>
>>Hi all,
>>
>>When I run Fritz 6 or Junior 6 in infinite mode over night, the NPS drop from
>>approx. 600KNS from when I start it to approx 75KNS when it has been running for
>>about 8-10 hours. The clock also starts to blink.
>>
>>BUT, when I run Fritz 5.32 in the same conditions, it continues the analysis
>>with the same KN/s even after several days!
>>
>>WHY?
>
>possible reasons:
>1)the position is an endgame position and Fritz6 or Junior6 get a lot of
>tablebases hits
>
>2)there is a bug in the NPS and Fritz6 does not give you the correct number
>I have not Fritz6 but I know that for many engines you can see negative number
>of nodes if you give the engine enough time and even if the variable of the
>number of nodes cannot get negative values you are not going to see the right
>number after enough time if this numbe is a 32 bit number and not a 64 bit
>number.
>
>I did not see problem 2 with Deep Fritz but I found another problem and after
>more than 99 or 100 hours of analysis the engine or the interface shows no
>information.
>
>Uri

Hi,

I have tried several different positions, and they are not endgame positions...



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