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Subject: Re: perft records

Author: Sune Fischer

Date: 01:50:35 09/07/04

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On September 06, 2004 at 07:43:51, Peter Fendrich wrote:

>What free programs have the fastest perft and what are the figures?
>Please, If you give figures also add processor, compiler and environment!

Frenzee does perft 7 on the initial position in 28 seconds on my 2 GHz Athlon.

However that is using hash and "the Uri trick" with no make/unmake at the last
ply.

>I want to compare with a new concept that isn't coded yet...

Just realize that this is really comparing apples to oranges.

I tried using the above fully legal generator in the program as
opposed to the old incremental generator, but all I saw was a big slowdown.
I don't recall the exact number but I believe it was around 10-15% slower than
the incremental approach.

My conclusion is that at least for the frontier nodes a fully legal move
generation is not worth it, at least not for a bitboarder that can easily do a
much faster incremental pseudo generation.

-S.

>/Peter



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