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Subject: Re: Mate in 16? ..see if your computer will solve it!

Author: Howard Exner

Date: 12:45:49 02/18/01

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On February 17, 2001 at 03:58:31, Ed Schröder wrote:

>The "Chess Knowledge" parameter is in no way related to extensions. It is
>known the parameter often has the side-effect of seeing tactical shots one
>ply and in rare cases even 2 plies earlier.

Thanks for the correction. My use of "extension" was wrong as I equated it to
Rebel finding certain tactical moves a ply or two earlier as you mention.

>Often positional values are
>decisive for pruning which is one of the reasons for this behavior. But
>this case is quite exceptional and I will have a look at it as the improvement
>in solution time is quite dramatic for this one.

I've found some other dramatic differences when Chess Knowledge is increased
when finding best tactical moves. But of course there are trade-offs when CK is
increased which may not be beneficial to the overall performance of Rebel.
>
>Ed



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