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Subject: Re: Humans beating computers

Author: Christophe Theron

Date: 23:21:58 12/12/99

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On December 11, 1999 at 23:38:05, Chessfun wrote:

>On December 10, 1999 at 08:22:05, Chessfun wrote:
>
>>On December 10, 1999 at 03:23:19, Christophe Theron wrote:
>>

(snip)

>>>I have just asked Lex to turn "anti-human" mode ON in the Rebel-Tiger engine. I
>>>think it will make a difference.
>>
>>Good, I will post games as soon as he plays it again.
>>Thanks
>
>
>I posted the previous score as being:
>Record for shutka vs. chesspartner:
>                          wins     losses     draws
>                rated         60         29         0
>              unrated          0          0         0
>
>Current is now:
>Record for shutka vs. chesspartner:
>                            wins     losses     draws
>                rated         61         30         0
>              unrated          0          0         0
>
>I did not see the two games one win for each and neither has them in their
>history.


After 2 days with antihuman ON, the Rebel-Tiger's ranking is up by 80-90 points
now.

Lex has checked the games against Shutka and most of them were won on time!

It is won on time because:
* the hash table size was set too high for very fast games. Clearing them or
updating them took too long for every move played.
* the time needed by the GUI to update the screen is not taken into account by
the engine. This time is probably between 0.2 and 0.5 second per move. After 90
moves, between 18 and 45 seconds are missing on Tiger's clock, and the engine
does not realize he is losing on time.

We will fix this by:
* setting the hash table size to a reasonnable value.
* setting an "operator time" of about 0.3 seconds per move to compensate for the
time taken by the GUI.



    Christophe



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