Author: Omid David Tabibi
Date: 15:23:44 12/10/03
Go up one level in this thread
On December 10, 2003 at 17:55:54, Robert Hyatt wrote: >On December 10, 2003 at 16:09:34, Omid David Tabibi wrote: > >>On December 10, 2003 at 07:02:14, Gian-Carlo Pascutto wrote: >> >>>On December 10, 2003 at 06:55:35, Omid David Tabibi wrote: >>> >>>>Another scenario: >>>> >>>>Sjeng isn't having a lucky day and in move 16 of a tactical variation in >>>>Sicilian, suddenly the amateur opponent engine plays a brilliant sacrifice >>>>resulting in a forced win. But your opponent frowns and realizes this is the CB >>>>GUI and not his engine (which doesn't support book at all). He requests to take >>>>back the move played by the GUI, disable book in GUI, and let the engine try to >>>>find the move on its own. >>>> >>>>Of course you know the engine can never find this mate on its own, so if you >>>>allow it you are saved and if you refuse you lose the chance for the world >>>>title. >>>> >>>>Do you consider it reasonable to allow him to do this? I DON'T! >>> >>>My question here would be who made the book. >> >>Let's look at it this way: >> >>The author created the book himself, but didn't write the access code. It is >>pretty much like EGTB, you use the EGTB but haven't written your own access code >>for it. >> >>The only question you will ask now, is whether the author has written the EGTB >>himself? No, but he does have permission to use it I guess. For example, if you >>get special permission to use the fritz opening book, you can use it. That's >>also the case with EGTB. >> >>So, basically, there is no difference between the interface playing from book, >>or from EGTB. >> >> > >Actually there is a _big_ difference. Playing from an egtb is a deterministic >procedure. There is no choice. You just pick the moves at leads to the >shortest mate. With a book, there is _plenty_ of room for creativity in >choosing a book line. IE you have lots of information about a particular >book move: wining percentage, number of times played (higher means the >winning percentage is more reliable), learning scores, maybe CAP scores, >maybe human comments (this is aggressive, this is passive, this is drawish, >this is sharp, etc.) How you use all that information to choose a single >book move is much more creative than just looking up a position in an >endgame table. And, in my case, I can actually choose a sub-set of book >moves and then search them to choose the best, if I want... Which gets >the engine involved in choosing a book line also. Yes, but when using the popular interfaces like Fritz or Shredder, the engine is totally asleep in the opening phase. > > > > >>> >>>-- >>>GCP
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