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Subject: Re: perft records

Author: Reinhard Scharnagl

Date: 04:13:43 09/07/04

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On September 07, 2004 at 04:50:35, Sune Fischer wrote:

>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
>>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.

Hi Sune,

last statement could been proved easyly by perft or it is simply an opinion.

My opinion is, that bitboarders neither are really faster nor slower.

Regards, Reinhard.


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