xgammon binary package in Ubuntu Jammy riscv64

 This a nicely implemented backgammon with the following features:
    - X11/Xaw interface,
    - a simple file selector and saving dialog,
    - You can edit positions and perform rollouts.
    - Position dump to a mail file in the format used in backgammon newsgroups.
    - Easier movement of stones, by simple button clicks.
    - You can play against an opponent on a remote X-Terminal. (experimental).

Source package