/usr/share/doc/gpsshogi-dbg/AUTHORS is in gpsshogi-dbg 0.6.0-3+nmu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/gpsshogi-dbg/../gpsshogi/AUTHORS
/usr/share/doc/gpsshogi-dbg/../gpsshogi/AUTHORS