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Subject: Re: Verified Null-Move Pruning, ICGA 25(3)

Author: Omid David Tabibi

Date: 14:56:57 11/20/02

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On November 20, 2002 at 17:51:40, Alessandro Damiani wrote:

>>One final remark: You use standard R = 3 in DIEP. So the search tree constructed
>>by your program will definitely be smaller than that of verified R = 3. Many
>>people find standard R = 3 as too risky; but if you are happy with its overall
>>tactical strength, then I don't recommend you to shift to another method. But
>>for those who'd like to get greater tactical strength than standard R = 2, and a
>>smaller search tree than R = 2, I recommend to try verified null-move pruning.
>Vincent uses R = 3 and complex quiescence search (Vincent, correct me if I am
>wrong). Maybe your Verified Null-Move gives about the same results like R = 3
>with a complex quiescence search.
>_If_ this is true then your approach is simpler and therefore better. Just my
>two thoughts before going to bed. Good nights.......

As I mentioned before, you might get the same tactical strength via a
complicated quiescence; however, by using verified null-move pruning with a
simpler quiescence you will get a smaller search tree.


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