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Subject: Re: Interesting position?

Author: Gerrit Reubold

Date: 08:51:01 08/03/00

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On August 03, 2000 at 10:51:31, Mogens Larsen wrote:

>On August 03, 2000 at 10:25:29, Gerrit Reubold wrote:
>
>>Hi Mogens,
>
>Hello Gerrit,
>
>>About the importance of storing results from previous searches:
>>Bringer doesn't do this (instead the hashtables are always cleared between the
>>moves). :-)
>>
>>I implemented it this way to be able to always reproduce searches (and bugs).
>
>Okay, thank you for the information. I did have the suspicion that I was talking
>rubbish :o).
>
>>If Bringer's game was played with winboard, you might want to examine the
>>Bringer.pgn file which is created in Bringer's directory. This file stores all
>>winboard games, including information about Bringer's score's, time to move...
>
>Here's the Bringer pgn from the game in question. There's a twenty second
>discrepancy, but the gap might have several explanation. However, I won't
>venture a guess. I'm surprised by the extent of the time usage. What made
>Bringer use that much time?

Bringer did play 8 moves from the book. That leaves 40 min. for 32 moves, about
75 sec/per move on average. Bringer (I think most engines) will use/need more
time on fail high or fail low, I think 105 sec. is not so surprising.

BTW: these 105 sec. are Bringer's time to play Bxh6, not the time to change the
PV to Bxh6.

About the 20 sec. discrepancy: Are you using the same hash table size? Do you
analyze in 1-best mode?

Greetings,
Gerrit



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