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Subject: Re: Null-Move: Difference between R = 2 and R = 3 in action

Author: Omid David

Date: 08:17:12 07/13/02

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On July 13, 2002 at 10:50:52, Robert Hyatt wrote:

>On July 13, 2002 at 02:07:17, Vincent Diepeveen wrote:
>>I still do not understand which positions you talk about which R=2
>>is finding and R=3 isn't.
>Note that he used fixed-depth.   This is therefore not surprising since
>some lines will be searched one ply shallower..

Of course. I merely did something like Heinz in "adaptive null-move pruning" (he
searched to fixed depths of 8, 10 and 12). But to get a clearer distinction, I
turned off checks in qsearch (that means in practice R=3 would perform better
than it did in those tests)

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