This is a command-line program for manipulating chess games recorded
in the Portable Game Notation (PGN).
Extracted games may be written out either including or excluding
comments, NAGs, variations, move numbers, tags and/or results.
Games may be given ECO classifications derived from the accompanying
file /usr/share/pgn-extract/eco.pgn, or a customised version provided
by the user.
For a full description of pgn-extract's functionality see