DONNA CHESS OPENING BOOKS

   This repository contains free Polyglot chess opening books that could be used
   with the Donna chess engine (http://github.com/michaeldv/donna).

   The opening books are as follows:

   gm2001.bin Games from 2001 to 2013 with minimum ELO of 2530 by Oliver Deville
   http://www.chess2u.com/t5834p15-gm-polyglot-book

   komodo.bin Komodo opening book by Salvo Spitaleri
   http://komodochess.com/downloads.htm

   rodent.bin Rodent opening book by Pawel Koziol
   http://www.pkoziol.cal24.pl/rodent/rodent_download.htm

   To use any of these book with Donna set DONNA_BOOK environment variable, for
   example:

   $ export DONNA_BOOK=~/chess/books/gm2001.bin