Tuning Books CTG:
By goldminer_999
Here is one way to hand tune the book that I have found very
successful although it takes some time and effort. Use the book to play some
engine games. Then play back over the games until you reach the point where either
the book line ends and there are no more book moves, or the point at which you
begin to get negative evaluations. Then set your engine on infinite analysis
for a while so it goes quite deep in it's search and by doing this you will
find the best next move - then add this move to the book line to extend it.
Then next time your engine plays the same line it will make this better
stronger move!
To manually edit the book go into Fritz and do
File/Open/Openings Book and select the book you want to edit. Then select the
Openings Book tab on right hand side of screen. Basically you can either:
• Add a new
move to the book, To do this right click somewhere in that book area (not on a
move just in empty space) and tick Allow Move Adding. then when you play back
through a game and want to add new line, just make the move on the actual board
and then select new main line from the options. This will then have added the
move to the book. You can do this for as many moves as you like so you can
extend a book line quite significantly.
• Change
the 'weighting' of an existing move making it more/less likely to be chosen.
This is shown in the Prob / % column. To change it right click on the actual
move itself and do change weight. The value is from -125 (very unlikely to be
picked) to +125 (very likely to be picked). You can change these manually to
any value. Actually this is what the automatic book learning does based on
whether games are won or lost - but this is how you do it manually.
• Mark
moves either red (means they won't be played ever) or green (mean they will be
picked, with a probablility given by the % column). To make a move red right
click on it and select Don't play in tournament
To make a move green right click on it and select Main Move.
You might want to make a move red if you find that at some point in the book
line you had a negative evaluation and therefore you can mark that move red so
it won't be played again.
Retrieved from my lovely best forum site
http://www.autochess.com/forum/tuning-and-making-books-ctg-t1209.html
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