Backgammon (skeptrune)

Full 7-point matches against GNU Backgammon, with the doubling cube, Crawford rule and pip counts. No ads, no account.

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: me@skeptrune.com