If you want to try version 0.13.0 of gnubg, the source is in
gnubg-0.13.0.tar.gz, and you should also take a copy of the neural net
weights gnubg.weights-0.13a.gz. You can optionally copy of the
bearoff databases in gnubg_os0.bd.gz and gnubg_ts0.bd.gz, but the main
distribution includes code for generating these files manually, so it
is not essential to transfer these.