Backgammon

skeptrune

About this game

Play full backgammon matches against GNU Backgammon, the free neural-network engine that serious players use to study the game.

HOW IT PLAYS
- 7-point matches against GNU Backgammon, running at 2-ply strength.
- Tap a highlighted checker to move it. Legal moves are worked out for you, so you can only make legal plays.
- Undo your move step by step before you confirm it.
- With two different dice, choose which die to play first.
- Pip counts for you and your opponent are always shown.
- Full match rules from the engine: doubling cube, Crawford rule, gammons and backgammons.
- Double when it is your turn to roll, and take or pass when the engine doubles you.
- The engine may offer to resign a lost game; accept or play on.
- Built for landscape, on a wood and felt board.

PRIVATE BY DESIGN
- No account and no sign-in.
- No ads, no analytics, no tracking.
- The engine runs on your phone. Your matches are saved only on your device.
- An internet connection is needed to load the engine when the app starts.

GNU Backgammon is free software licensed under the GPL-3.0 (https://www.gnu.org/software/gnubg/). This app runs a WebAssembly build of it from the gnubg-web project by Theodore Hwa.

Questions or feedback: [e-mail]

What’s new

Rebuilt to match the full web app with match analysis, history, .mat export, trends and optional sign-in with sync. Removed distracting move-highlight rings, made the board full-width, added tap-a-die move ordering and in-app account deletion.