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Subject: help on extensions, please!

Author: Inmann Werner

Date: 15:01:43 02/18/99

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Hello!

After looking at the results of the other programs and mine, I got really
disturbed. After ply 8, my program calculated 2.454.000 positions, and the
others do around 700.000!
I checked my extensions and put out my check extension, and suddenly my program
only needed around 600.000 nodes.
I think, i do something very very wrong!
I extend on any check that comes when there is only 2 or less distance till
quiet search. This seems to blow up the tree extensively. I do this extension
up to 5 times within one search, so sometimes in a 8 ply search , I search to
ply 13.
So my question is.
When should I extend on check?

Thanks

Werner



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