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Subject: Re: Fritz won shredder,Century won Boris kogen(2286) in the israeli league

Author: Ed Schröder

Date: 00:53:03 04/02/00

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On April 02, 2000 at 01:57:27, blass uri wrote:

>On April 01, 2000 at 22:23:26, Tina Long wrote:
><snipped>
>>Is there a web site for the Israeli League, where I can follow the progress of
>>the Teams.
>
>I know only www.chess.org.il but it is in hebrew and the last time I tried to
>look at it there was a problem with this site and I could not find information
>about the teams.
>
>>
>>
>>Why did you choose (knowledge=25) for Century?
>>Is it to gain an extra ply to the search depth?
>>I thought (knowledge=500) would be best against IM or better.
>>Has Ed suggested (knowledge=25)?
>
>Ed said that knowledge=25 is better at least against computers and it is
>posssible that it is better also against humans because the extra ply may lead
>to better positional moves.
>
>I told him that I am going to use knowledge=25 and he had no problem with it.
>I think that the term chess knowledge is misleading because Rebel knows
>important things also with chess knowledge=0.
>
>Chess knowedge=25 is better than chess knowledge=0 but it is a mistake to assume
>that Rebel knows nothing with chess knowledge=0.
>
>I tried a match between chess knowledge=500 and chess knowledge=0 at 7 plies
>depth and chess knowledge=500 won but I did not see something close to 100% for
>chess knoledge=500.
>I do not remember the exact score now but it was something like 40:20 for chess
>knowledge=500.
>
>Uri

And CN500 will win against CN100 and against CN200,300,400 as long as you
play on ply-depth. But as soon as you are going to play on normal time
control the picture changes. So far my conclusion is that CN=25 does the
best overall job for Rebel Century 1.0 (cdrom version).

For the update (version 1.2) this is set to default. Since it is not
allowed to play with version 1.2 in the Israel League Uri suggested
to use CN=25 which makes Century 1.0 stronger. Uri deserves a statue
for smart thinking and having an excellent understanding of Rebel.

Ed



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