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Subject: Re: Test position software... whats out there already?

Author: Joel

Date: 19:01:31 04/27/04

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Hey Andrew,

The recap extension is one such example.

Try extending 1 full ply always when making a recapture of similar value. It
initially seems to give you tactical strength, (it did when my engine was new,
and had no such extension) but it also hurt my depth a fair bit. Worked great on
the testsuites too.

However, as my program has got stronger, I found that limiting the extension in
various ways actually improved the strength of my program. I am sure there are
positions where the old aggressive recap extender tactically crushes the newer
more controlled bodo. However, the newer bodo gains a bit more depth on all the
quieter positions, which translates to better positional play. Since these
quieter positions are in the majority, the overall performance of bodo increased
when I limited the extension somewhat. Interestingly enough, my WAC scores
dropped!

I use WAC more as a bug testing tool.

Joel






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