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Subject: Re: Opinions on the Deep Blue Chip in a post Rebel-Rohde world?

Author: Paul Richards

Date: 09:49:20 05/24/99

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On May 23, 1999 at 22:44:04, Roger D Davis wrote:

>It's only one game, certainly, but it doesn't really look like Rebel had much
>understanding of the game from the time it left book (other's appraisals, not
>mine), and Rebel's lose supports the argument that the micros have their own
>weaknesses, and aren't yet a real match for GM players.

Hard to say based on one game.  Yes, Rebel made some positional errors
that were obvious to human players, such as letting your opponent take
control of a file.  But to say that the program "doesn't understand"
based on that is a bit much.  If you make a little change to king safety
or some other aspect, a program can play totally differently.  So the
issue is tuning and balancing.  What I'm saying is that we don't know
how far "off" Rebel really is in it's play.  What looks like a gross
misunderstanding could be cured by a trivial adjustment. The point is that
having the man-machine games will allow the program to be tuned for human
play.

>So where does that leave previous opinions about a DB board for the desktop?
>We'll have to see what the next months of Rebel-GM games hold, but the market
>for a DB chip is starting to look better and better.

Certainly Hsu's card will be held to the same standards as Rebel.  In fact
Hsu has to perform better.  And how easily can any playing aspect of Hsu's
card be altered if need be?  I tend to think that the card will whip
butt on the Rohdes, since a slight tuning inaccuracy will be supported
by brute depth search.  Rebel needs some tuning, but it may have won
anyway if it searched to 15 or 16 ply for every move.  Hsu's card will
do that easily. The combination of tuning and strength was enough to beat
Kasparov, so even though it might be improved, I think it's already pretty
close. ;)  I suppose for marketing sake though Hsu should be rooting for
the humans to beat the existing micros.



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