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Subject: Re: 3 computer chess myths: which one has proven to be true?

Author: David Dory

Date: 06:24:12 04/22/02

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On April 22, 2002 at 09:01:30, Jouni Uski wrote:

>1. program X plays relatively better against humans than against computers
>2. program Y plays relatively better with longer time control
>3. there are diminishing returns from speed doubling, when search depth is
>   increased
>
>I think definitely 3. is true - only the size of diminishing is unclear. E.g.
>from latest SSDF list (yes comp-comp play!) doubling gives only 40 points at
>current top level against 75 previously. But 1 and 2 are still open cases.
>
>Jouni

#1 in addition to a more hand-tuned evalu8, better play against humans requires
a better book. Not for an average player, but to take on a GM who knows the
latest busts in ECO, you need a very up to date book or the program is behind
right from the start.

I think Rebel has been a great example of this.

#2 True. You can program a version of your engine just for blitz and make it
more effective. Hiarcs would NOT be a blitz champ - it isn't designed for it.
The 17XX Crafty and Fritz6 are more designed for blitz than either Hiarcs or the
18XX Crafty, IMO. They just do more nps, and that's not the only thing in blitz,
but it's a bigger part of the game than in normal time control.

#3 True, and known since forever. But the hardware speed ups just keep coming,
and memory just keeps getting bigger, with bigger Hard Disks for all those
EGTB's. What a kick in the head when we can access 8 or 10 piece TB's!!!

Good post, J.U.
Dave





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