Author: Tony Werten
Date: 16:45:19 12/29/02
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On December 29, 2002 at 19:35:52, Martin Giepmans wrote: >On December 29, 2002 at 19:05:51, Tony Werten wrote: > >>http://members.home.nl/matador/chess840.htm >> >>Tony > >The formula for reductions 2b and 2c look strange: >"alpha < score + threat + margin --> reduce depth ..." > >This would imply that a bigger threat gives more reductions ... >Should be score - threat - margin? Or ALPHA should have been BETA. I'm not sure if this is a "position below alpha wich is not going to improve" or a "position above beta wich is not going to deteriorate" I have to let it sink in. I feel good because I have been working on this stuff before, I feel bad because I dropped it because I didn't use that last small refinement Ed explains. Well, given 20 years I would have found it (maybe) BTW Ed, I send you a personal mail. ( from the webpage) Tony > >Martin
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