How about a chess tag? packages like 3dchess, gnuchess-book, tex-skak, phalanx, gnome-chess, crafty, gnuchess, text-chess, scid, pgn-extract, emacs-chess, crafty-books-medium, eboard-extras-pack1, crafty-books-small, emacs-chess-pieces, xboard, sjeng, eboard, eboard-extras, crafty-books-medtosmall, cil, cl-cil -- this is not an exit