Actually pychess already depends on gnome-icon-theme. Are you sure that you have pychess installed and gnome-icon-theme not installed at the same time?
-- [apport] pychess crashed with GError in <module>() https://launchpad.net/bugs/93474 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
