Author: enrico carrisco
Date: 22:11:39 05/17/02
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On May 17, 2002 at 12:04:08, Brian Katz wrote: >I installed the new Hiarcs 8 book upgrade, but I am not sure as yet if there is >any improvement in results when using the new book running an engine tournament >between Fritz 7 and Hiarcs 8. >Hiarcs 8 seems to get better results from the CD Book that I intstalled. > >Has anyone noticed similar results? > >Brian Katz Prior to HIARCS 8's release, Chessbase took this smaller 36MB book and merged many GM games to make a bigger book, but unfortunately, it changed the probabilities of moves being played to such an extent a number of poor 'do not play' moves were enabled! This means that although the H8 CD book is big it is not optimized and has many weak moves which can be played. The converted book is smaller and narrower than the other books but it is stronger generally speaking. This is essentially what was disclosed on the Chessbase website, but I feel it wasn't clear that besides the CD book being quite wide, it also has confused weighting. For computer vs. computer play, you will find the upgrade book is a better choice. -elc. H8 Development Team
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