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Subject: Re: Chessmaster selectivity

Author: Shep

Date: 06:13:54 08/09/99

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On August 09, 1999 at 07:48:22, Harald Faber wrote:


>Don't forget there is danger to overlook some good move the higher the
>selectivity is...
>Genius and Shredder have 12...

I think there is a difference to CM.

For Genius and Shredder, the formula is
   MaxDepth = Brute Force Depth + Selective Depth
Therefore, if you set Shredder's selectivity to "12" and it is currently
searching ply 9, it will not look at any line deeper than 21=9+12 ply.

The same is not true for Chessmaster.
Even with SS=0, when at ply 6, it is looking deeper than 6=6+0 ply as you can
see by its search display.
I rather believe that the SS setting is some more abstract number, like "don't
use this extension if SS less than 7" or "follow capture extensions to at least
SS/2+5 ply" or something...

---
Shep



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