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Subject: Re: Tiger or Pussycat: ChessTiger 14 vs. Junior 7

Author: Harald Faber

Date: 02:22:18 07/11/01

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On July 10, 2001 at 13:32:17, G. R. Morton wrote:

>>I think the best method to find good and bad lines is to take a look at the
>>games. Start where the book line ends and look what happens in the next 5-10
>>moves. If the -1.2 arises to a justified +0.2 then the line cannot be bad just
>>because the engine came out of book with -1.2. And so on and so on.
>>
>>
>>>Uri
>
>This is a method I try to use, but I wonder if it would also be a method to
>compare software, i.e., the better software would tend to be the one that can
>can stay most consistent with its last book evlauations when you extend the
>lines consitent with its own evelauations during the extention.

I thought this was the adjusted opening book ever programmer dreams of?

>It should also
>be good to extend by known GM games and see what happpens.

And you will be surprised how often programs mishandle such lines because the
programs don't understand the strategy. Versus other programs this might not be
a significant disadvantage because the other programs don't understand it
either. Of course sometimes the programs exploit some holes in the opening lines
of GMs. I have such a game running where the line ends after a black move and
black won in the GM game later on. But the program with white plays a more
logical attack and now has a won position. In another game the opening book
didn't contain the last black move and the program played an alternative. It was
an easy draw...remind me this evening (in 8-9h) to post the games, don't have
them here now.




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