Author: Uri Blass
Date: 04:18:09 03/26/04
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On March 26, 2004 at 06:17:46, Tord Romstad wrote: >On March 26, 2004 at 04:43:23, Uri Blass wrote: > >>I also doubt if history based pruning was used in 1995 or 1999. > >They date back at least to the early 90s, IIRC. I no longer remember the first >time I read about them, but it's a *really* long time ago. I never read about them and invented the idea independently. Only later I read about it when I read sergei's post. > >>I also doubt if the botvinik extension was used in 1995 or 1999. > >You're right, it's possible that the Botvinnik-Markoff extension wasn't very >common back then. > >>You also have your ideas for reductions or extensions that were probably not >>used in 1995 or 1999. > >I use mostly static tricks which have been out of fashion for more than 20 >years. :-) > >Tord I doubt if the programmers of the commercial programs heard about them. They were certainly not used more than 20 years ago in the way that you use them(otherwise they could be succesful also in programs like Crafty). Crafty is probably better than gothmog in blitz because you did not do speed optimization but based on results that I read it seems not to be the case in longer time control. Uri
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