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Subject: Re: Past - Presence : Genius 4 - Chess Tiger 14.1

Author: Peter Berger

Date: 00:17:23 08/31/01

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On August 31, 2001 at 02:44:52, Christophe Theron wrote:

>No I just assume better branching factor from my program.
>
>Tiger needs less time than Genius to complete each successive iteration, and the
>effects of this better branching factor shows up more clearly when more
>iterations (ply depths) are completed.
>
>In sports, we would say that Genius has more explosive power (is a good
>sprinter) but gets tired very quickly. So if the race lasts longer, Tiger does
>not get tired when Genius is exhausted already.
>
>You are not going to see this difference if you let them run only short races.
>

I don't disagree at all ( the diminishing return remark was supposed to be a
joke) and everyone can see this effect on current CPUs. The question is at which
speed this effect really kicks in .

It it a 200 or a 400 meter race ? Or will ChessTiger need a marathon :) ?

I expect ChessTiger will do well in sprints, too btw .

Until the 486 came out Genius was probably still in active development. I assume
_if_ it was optimized for _any_ speed it was probably tournament time control on
a 386 or 486 CPU . Genius finds several very clever moves at fast times where
modern programs probably will rely to get them anyway with search .

pete




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