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Subject: Re: Needed at ICC: A 2000-2100 Rated blitzer: redshift?

Author: George Sobala

Date: 07:51:12 06/14/03

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On June 12, 2003 at 18:02:28, Roger D Davis wrote:

>I'm rated about 1800-1850 on any given day. I like playing computers, and I like
>playing on ICC. But ICC has a huge rating gap in the programs available to the
>average member. It requires that new programs play below 1800, unless they are
>1) run by the author or 2) paid accounts. And unfortunately, computers are so
>fast that even something like TSCP runs 1700-1900, on average.
>
>As a result once you get to 1800-1850, there are literally no computer opponents
>you can play that are consistently a couple of hundred points stronger than you
>are. Take a little of the fun away, since I like to win once in a while.
>
>Roger

Have you tried playing redshift? It is a Deep Sjeng personality crippled not by
limiting the search depth but by whacking the eval function way out of kilter so
that it values attack considerably over material: it makes unsound sacs. My aim
was to produce a fun opponent for the strong amateur.

I run it on a K6-450 and it used to rate about 2300-2400, players of your
calibre could take points off it fairly regularly. Trouble is since the Deep
Sjeng 1.5 upgrade came out, its rating shot up about 100-150 points, taking it
out of your desired range! I am gradually trying to adjust the eval function
further to bring it down to around 2300 again, but it takes time to do this and
observe the results and its style of play. Give it a go though - it is usually a
fun engine to play, and often when you lose you will feel that something
"brilliant" happened over the board (though if you analyse the game afterwards
you will usually find that the "brilliancy" was a mere cheapo!)



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