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Subject: Re: So why *does* Fritz beat Crafty?

Author: Christopher R. Dorr

Date: 10:33:20 03/29/99

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I think it is important to look at several things here:

1. I am not convinced that the best programs really *are* thet much better than
Crafty. In computer-computer tests, the others may well fare better, but in
playing humans, I think it may be a different story. I for one (A weak USCF
Master) honestly feel that Crafty is about as strong as Fritz5. I can't tell the
difference, perhaps because they are both so much better than me. And if they
are that much better than me, imaging how much stronger they *both* are to the
average player (c. USCF 1400-1500). To a 1500, there is *no* strength difference
between a 2500 and a 2550.

2. Even on a single processor machine, Crafty is better than just about all the
other programs (and humans too) at speed, on ICC. Mofongo (A single processor
Crafty 16.6 running on normal, albeit somewhat high-end equipment) is currently
rated 3072 at blitz. This is higher than CM6000, Fritz 5.32, Ferret, etc. At
least at blitz, Crafty can make a very good claim for being as strong or
stronger than everything else in the world.

3. Crafty is designed to be SMP. To say it's not fair to state that Crafty on a
Quad Xeon is better than Fritz on a single PIII is the same as saying that it's
not fair that Deep Blue runs on a specially designed computer. If the question
is what's the best, a very valid way of looking at is to measure their
performance on their optimal machine. Crafty's optimal machine is a Quad Xeon or
PIII, while Fritz's is a single PIII 500.On these optimal machines, I honestly
doubt Fritz's superiority.

In short, I believe the premise of this thread is somewhat flawed. Crafty has
not (against humans) been demonstrated to be significantly weaker than anything
else, especially at speed. If this question is rephrased as "Why is Crafty
weaker than Fritz (or Rebel or whatever) at 40/2 on a single processor system
agains humans?" or "Why doesn't Crafty fare as well against computers as it's
anti-human blitz rating would suggest", I believe that we can answer these
questions. As the question is currently phrased, I don't think we can answer
this well.

Chris Dorr



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