Author: Uri Blass
Date: 02:42:58 08/31/02
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On August 31, 2002 at 05:29:21, Mogens Larsen wrote: >On August 31, 2002 at 02:10:25, Aaron Tay wrote: > >>I agree. You can find out if games stay in book longer with longer time controls >>if you keep an average of the number of book moves that the engine stays in >>book. It depends on the engine also. I have the impression Crafty finds book >>moves better than Yace at the same time control. And The King is also pretty >>good. > >That matches my observations as well. > >>Of course if this trend holds it may imply that autogenerated ametuer books >>might even be weaker than no books when faced against Professional books, since >>the autogenerated books will stay in book longer with greater chances of falling >>into a trap! > >That is true to a certain extent. Though I suspect that the deficit isn't >horrendous given that the book is something more than an ordered PGN file, where >main attributes are wide and random. This means choice by statistics, controlled >opening repetoire and learning are requirements for decent results IMO. At least >against your average commercial book, which is quite wide compared to those used >at championships (or so I imagine). It's not unlikely that an "out of book" book >could yield better results than your average autogenerated book. > >Regards, >Mogens If I prepare for an important championship(something that I do not prepare at this moment) I may choose a move like 1.d3 or 1.c3 or something similiar. I may also have few lines after that move in my book. I do not expect the commercial opponents to have a killer line against it espacially when they cannot know what is my choice for the first move and they need to prepare a lot of killer lines in order to get a winning position out of book. Uri
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