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Subject: ChessTiger for Palm, opening book question (suggestion).

Author: J. C. Boco

Date: 22:07:42 04/23/02


I notice that the opening book for Chess Tiger has 8000 positions.  There have
been a handful of posts (in the archives) complaining about the small opening
book--demonstrations of how ChessTiger misplayed an opening and suffers a bad
evaluation because of an opening hole.

When I purchased RebelCentury for the first time several years ago, I was very
pleased to learn that I could use a database of chess games (from strong
players) for the opening book  ((and if you ask me to define "strong players", a
majority of them were 2500-2600)).  This offers a wonderful oppurtunity to play
a varied game- most of the time strong theory was played against you, and if
sometimes a suboptimal line was played I enjoyed the variety.

ChessTiger has had its 8000 position book for many months now (over a
half-year?).  I suggest an easy way to significantly increase the opening book:
Compile a database of games played with ELO>2500.  How many games would fit into
8MB on a palm?  If I recall correctly, when I loaded Rebel's ~500,000 game
database it took up about 110MB.  If the correlation between PC and Palm memory
holds, then an 8MB palm should hold about 7% or 35,000 games.  If the first
10-15 moves of each game is used as an opening book (perhaps more in sharper
openings?) that would give a lowball estimate of a 350,000 position opening book
for your palm running ChessTiger.

The concept seems simple, and I present it in good faith.  From my few posts in
the past you will know that I have no real computer experience, so if there are
simple technical objections or programming-headaches with this idea then chalk
up my naive suggestiong to ignorance.




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