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Subject: Re: Kramer Vs Kramer (Yace + Book against Yace + No Book = 13.5 - 6.5)

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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