/usr/share/app-install/desktop/gnome-chess:gnome-chess.desktop is in app-install-data 15.10.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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X-AppInstall-Package=gnome-chess
X-AppInstall-Popcon=165
X-AppInstall-Section=universe
Name=Chess
GenericName=3D Chess Game
Comment=Play the classic two-player board game of chess
Keywords=game;strategy;
Version=1.0
Exec=gnome-chess
Terminal=false
Type=Application
Categories=GNOME;GTK;Game;BoardGame;
StartupNotify=true
Icon=gnome-chess
MimeType=application/x-chess-pgn;
X-Ubuntu-Gettext-Domain=app-install-data
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