short note:
Ferdinand created nice tools for us. In my games are eval by engines included.
You can select out games from my PGN file if you like.
Very simple ...
Download:
universal-pgn-epd-tool v.2 from my download area.
Download:
my complete database v. 4.12 (around 361Mb).
Rename the *.pgn file in my download directory in 1.pgn (more easy).
And now ...
Start the tool by Ferdinand in text mode:
Step 1: Enter ...
Step 2: high-score 1.pgn ... enter
Step 2: 60 ... enter (eval higher as 0.60 will be select out ... White games)
Step 3: -40 ... enter (eval higher as -0.40 will be select out ... Black games)
I think 60 and -40 are good enough!!
And the tool select out all games with such evals. The tool looking three moves after the opening book ended, this is great ... just fantastic !!!
As final result you have select out the critical games to 99%.
This step need time ... 2-3 hours or a bit more I think!
Tool by Ferdinand must checked 225.000 games!!
...
Next step ...
Please download the PGN Tools by Norm Pollock.
You need from the Toolbox by Norm the PGN utility "truncate".
If you like an opening book ... not longer as 14 moves = 28 half moves ... you can start truncate in text mode with ...
truncate 1.pgn 28
...
Next step ...
You can delete the doubles with a database tool like Scid or the Toolbox by Norm or ChessBase.
Ready ...
You have a strong PGN database and from this database you can create for all GUIs you like a good opening book for testing engines.
Included are around 42.000 equal lines. To popular openings more lines as to ... unpopular lines, like C30-C39 for an example.
...
Please note:
Truncate made no sense with 20 or 22 half moves. Different ECO codes need more as 12 moves or the ECO codes never played!
Have fun and good luck ...
3-4 hours and your first version is ready.
Be sure that all popular lines to A00-E99 included in my FCP Rating List.
Next steps are fine tuning but I think not needed because you will not have many bad lines in your book and all 500 ECO codes with best-lines are included.
Best
Frank
PS: And if you have interest to use Shredder Classic GUI ... such an opening book ... tuned since three years every day more as 1 hour can be found in my download area too.
I think each person will have a lot of fun to working on an own book. We don't need commercial books (OK, the Hiarcs book is the best one in my opinion). All what we need are strong databases with eval. In 4-5 hours each computer chess lover is an opening book expert ...
Try it out!
