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Subject: Re: NullMove and move ordering

Author: Rafael Andrist

Date: 11:59:13 01/01/02

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On January 01, 2002 at 03:59:33, Matthias Gemuh wrote:

>
>Hi Experts,
>I get 92.5% ordering on BWTC test suite without nullmove.
>With nullmove, this drops to about 87.5%. Am I doing something wrong?
>How do I cure this?
>
>Thanks,
>Matthias.

I make them the same observation with my program. But my search algo is simple
AlphaBeta + Nullmove, no PVS. BTW I don't think that BWTC is very useful for
testing program improvements because most of the solutions are found after a
very small search depth where some move order heuristics don't help much and
statistical data about the search isn't very stable at the first 3-4 plys.

regards
Rafael B. Andrist



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