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Subject: Re: mclane's summer-tournament: round 6 update

Author: Christophe Theron

Date: 04:08:11 09/06/98

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On September 05, 1998 at 15:01:24, Thorsten Czub wrote:

>On September 05, 1998 at 12:42:17, Christophe Theron wrote:
>
>>The argument was between 11.2 and 11.4. In my opinion there is no argument
>>between 11.2 and 11.5. CT11.5 beats CT11.2 by more than 65%.
>
>I have not said that I would prefer 11.2 over 11.5 so far.
>All i can say is, that I told you that 11.2 was in my opinion far better than
>11.4 ...
>
>I have not come to a final conclusion. I would need special analysis to tell you
>exactly how many elo-points the one version differs from the other.
>In the moment i cannot do so because of the summer-tournament i have to play
>plenty of games between all kind of programs.
>Maybe later we have time...
>In the mean time please win the french and spanish championship.
>So that the people believe in my words.
>I don't like to be wrong :-))
>
>
>>In average, of course. On 1 game, anything can happen... You have seen one of
>>the 35 games out of 100 that 11.2 can win against 11.5...
>
>always and always people say this. I don't trust in statistics. Only in my own
>feelings. Sorry. But - numbers are numbers are numbers on paper.
>Nobody knows how these numbers have been realized.
>Also i would never trust games version x against x+1 because the 2 engines are
>too similar to get real data to trust in.

You repeat this at will, but never give good reasons.

I know several aspects of computer chess where the only way to check if a change
is good is doing self test.


    Christophe



>When i test a program it needs at least a month or 2.
>Then i can tell you about it, but not earlier.
>In this time i do all kind of things with the program.
>Test-positions. Games vs. computers. Vs. humans. Old positions i know from
>experience. When I am suspicious I construct positions. to see if my idea about
>the reason it loses/wins is right.



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