Bookbuilder open source

Announced the open source 'package' (lots of files !) again.
after i added some more instructions (in sources directory
and updated the readme.txt. Announced on talkchess.com (programmers forum).

Some history, the functionality of the program speaks for itself,
decades ago the idea was to use the program not only to study
opening theory, but to improve opening theory itself.

NB not offering support (but you always can try to 'bribe' me
of course if you really get stuck :-)
(no guarantees, however)

PS all this work  resulted in my awesome (paper) chess -openingstudy- book (on lulu) :
https://www.lulu.com/shop/jef-kaan/better-chess-openings/paperback/product-1mw8r8qz.html
with five stars on Amazon.
https://www.amazon.com/Better-Chess-Openings-Jef-Kaan/dp/1326180770/

Meanwhile i used my knowledge to play correspondence chess for some years
on ICCF and acquired a CCM (master) title.

While we are approaching the draw limit in computer chess, i've 
stopped with correspondence chess, at least as long as the (endgame
and 3 pos draw) rule haven't been modified to reduce the draw rate at high levels.

Yet based on the more modern Nnue engines of last year, i'm intending to update
my (paper) book (on Lulu/Amazon) or possibly even write a new edition.

Small update in Bookbuilder book

 In the latest download (bookbuilder setup file), there's now
a slight update of the book.pbs file (more than one million positions)

Best move now is 1.e4 in line with experiences in correspondence chess.
With best play, chess is a draw. but humans still may enjoy the g
game; and become a bit more modest in the process. 

The updated book may be useful for otb players, who like
to check/update their repertoire. But it's not perfect, of  course.

In correspondence chess you may of course look at 
bigger databases/ opening books.

Nevertheless, have fun

:)

Bookbuilder (free) download

The opening study and training program Bookuilder
(latest commercial version was 4.3b) now becomes
opensource. The setup file now can be downloaded at 

Bookbuilder download page 

Formerly a trial version for a week, the serial codes
for registration now are given as 'donation-ware'

Method for registration: go to help entry on menu 

username: customer@2013

serial code(s) FA95  997

Latest, medium size book was made by analyzing 
endmodes with SFNNue (!) and backsolving /full minimax
of the book with the older version bb36 (also included).

Enjoy

A donation a foundation in Moldova will be appreciated

See info in the readme.txt

PS sourcecodes of the program will be uploaded soon
(in the directory sources of this project on sourceforge.net)