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Generating an opening book

  1. Generate a master book from a PGN list of games.

    make book.tsv.zst INPUT=foo.pgn

  2. Prune positions from the book that were reached, for example, less than 100 times:

    ../build/src/bookgen/merge-books 100 <(zstdcat book.tsv.zst) | ../tools/bookgen/prune-book > book100.tsv

  3. Test the generated book.

    ../tools/bookgen/test-book book100.tsv

Generating an ECO code book

Requires a PGN list of games, annonated with the appropriate tags (ECO, Opening and Variation).

make eco.tsv INPUT=foo.pgn

Test with ../tools/bookgen/test-book book.tsv eco.tsv.