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Subject: Re: Null move. How many moves ahead you can see?

Author: leonid

Date: 16:27:28 10/20/99

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On October 20, 1999 at 09:40:44, Robert Hyatt wrote:

>On October 20, 1999 at 07:25:21, leonid wrote:
>
>>Never used the Null Move. Would like to have an idea how efficent it is from the
>>point of view of its speed. How many extra plys it give to you? If, for
>>instance, you can see through the usage of "brute force" and no "extentions"
>>position in one and five seconds, how more extra plys you can see through the
>>last method? You want your extra ply badly (like me) but very eager to conserve
>>the precision of your search as much as possible.
>>
>>Thanks,
>>Leonid.
>
>
>You can count on about 2 extra plies in the middlegame, assuming you use
>reduction factor R=2.  It sometimes takes an extra ply or two to solve
>some tactical positions, but you get that extra 2 plies, so that you don't
>lose much, if anything.  The gains are significant.

Now everything is clear. Thanks for response!
Leonid.



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