/usr/share/emacs/site-lisp/chess/ is in emacs-chess 2.0b6-1.1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/emacs/site-lisp/chess/chess-ai.el
/usr/share/emacs/site-lisp/chess/chess-algebraic.el
/usr/share/emacs/site-lisp/chess/chess-announce.el
/usr/share/emacs/site-lisp/chess/chess-auto.el
/usr/share/emacs/site-lisp/chess/chess-autosave.el
/usr/share/emacs/site-lisp/chess/chess-chat.el
/usr/share/emacs/site-lisp/chess/chess-clock.el
/usr/share/emacs/site-lisp/chess/chess-common.el
/usr/share/emacs/site-lisp/chess/chess-crafty.el
/usr/share/emacs/site-lisp/chess/chess-database.el
/usr/share/emacs/site-lisp/chess/chess-display.el
/usr/share/emacs/site-lisp/chess/chess-engine.el
/usr/share/emacs/site-lisp/chess/chess-epd.el
/usr/share/emacs/site-lisp/chess/chess-fen.el
/usr/share/emacs/site-lisp/chess/chess-file.el
/usr/share/emacs/site-lisp/chess/chess-game.el
/usr/share/emacs/site-lisp/chess/chess-german.el
/usr/share/emacs/site-lisp/chess/chess-gnuchess.el
/usr/share/emacs/site-lisp/chess/chess-ics.el
/usr/share/emacs/site-lisp/chess/chess-ics1.el
/usr/share/emacs/site-lisp/chess/chess-images.el
/usr/share/emacs/site-lisp/chess/chess-input.el
/usr/share/emacs/site-lisp/chess/chess-irc.el
/usr/share/emacs/site-lisp/chess/chess-kibitz.el
/usr/share/emacs/site-lisp/chess/chess-link.el
/usr/share/emacs/site-lisp/chess/chess-message.el
/usr/share/emacs/site-lisp/chess/chess-module.el
/usr/share/emacs/site-lisp/chess/chess-network.el
/usr/share/emacs/site-lisp/chess/chess-none.el
/usr/share/emacs/site-lisp/chess/chess-opening.el
/usr/share/emacs/site-lisp/chess/chess-pgn.el
/usr/share/emacs/site-lisp/chess/chess-phalanx.el
/usr/share/emacs/site-lisp/chess/chess-plain.el
/usr/share/emacs/site-lisp/chess/chess-ply.el
/usr/share/emacs/site-lisp/chess/chess-pos.el
/usr/share/emacs/site-lisp/chess/chess-puzzle.el
/usr/share/emacs/site-lisp/chess/chess-random.el
/usr/share/emacs/site-lisp/chess/chess-scid.el
/usr/share/emacs/site-lisp/chess/chess-sjeng.el
/usr/share/emacs/site-lisp/chess/chess-sound.el
/usr/share/emacs/site-lisp/chess/chess-transport.el
/usr/share/emacs/site-lisp/chess/chess-tutorial.el
/usr/share/emacs/site-lisp/chess/chess-ucb.el
/usr/share/emacs/site-lisp/chess/chess-var.el
/usr/share/emacs/site-lisp/chess/chess.el
/usr/share/emacs/site-lisp/chess/lispdoc.el