These tablebases do not include the pawn tablebases, which are quite large. This port alone will eat up around 2G. The pawn ending tablebases will need to be installed with the games/crafty-tablebase-pawn port, if you really want them. Be warned that both ports together will eat up around 7.1 Gigs of your disk space, or 14.2G if you don't delete the distfiles. (I highly recommend doing this, as these files almost never change). SERIOUSLY CONSIDER doing 'rm ${DISTFILES}/crafty/*.emd' as root when you have installed all of the tablebases you're going to want. To make use of the tablebases, something like the following should be added to your ~/.craftyrc file: egtb cache 12M