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Subject: Re: what was for CC advancement in the last years: hardware or software?

Author: Steve Maughan

Date: 10:53:46 11/14/03

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Martin,

In my view the answer is both hardware and software :-).  Although I think the
software improvements have been quite spectacular and IMO more interesting.  The
two main software trends that I've seen over the last three years are:

1) Increased focus on King Safety.  Of course it has always been important but
it seems as if the programmers have all reaped considerable benefit by focusing
on and improving this area of their programs. I would say Christophe Theron can
take quite a bit of credit for starting this recent trend when he introduced
Gambit Tiger, which started beating other PC "differently".  Other examples of
this trend has been the development of the custom personalities - where many
(all?) of the stronger ones for CM etc have much higher than average King
Safety.

2) More aggressive pruning algorithms which bring down the branching factor.
The engines of today (e.g. Shredder) seem to have very low branching factors
that are a results of aggressive and effective forward pruning.  This allows
them to make better use of the additional speed provided by the hardware.

Regards,

Steve



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