Author: Robert Hyatt
Date: 11:25:19 05/28/98
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On May 28, 1998 at 10:57:11, Komputer Korner wrote: >On May 28, 1998 at 09:22:31, Steven J. Edwards wrote: > >> >>There is the question also on how big the library has to be. Having a >>million position library will cover just about all of modern GM praxis >>well into the middlegame. >> >>Scanning PGN files is the way to go. Years ago I had tried typing in >>chunks of ECO, but it's kind of a drag. The question is how deep to go >>in a game while recording the positions; I have this set to 48 ply in >>OCD which seems to be a reasonable number. > >One million is not enough to cover all of opening theory. The Fritz >powerbooks are 10,000,000 positions. Genius GM powerbooks are 6,000,000. > >-- >Komputer Korner that has *nothing* to do with opening theory. They are storing *complete* games... Opening theory doesn't generally extend from 1. e4 to mate. It stops after 20 move or so. the "minplay" in crafty will take an opening book made from 330,000 games and reduce it to 7.5 megabytes of stuff, because over 90% of the moves in the stuff was only played 1 time in one game... Most programs don't want to follow "singular" lines because you put too much faith in the moves played by a single player in a single game... and you get burned as a result... and with so many games, it would take a century of learning to disable the lemon moves one by one...
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