A free backgammon home for your pocket — six hand-drawn boards, an engine that works offline on your phone, and a coach who explains the why behind every move. Learn to see more in every position.
Destinations
Six cities the game itself calls home. Start under the lights in Las Vegas, earn your seat in Monte Carlo — where the world championship is played — and travel on to Marrakech, London and Istanbul, where backgammon has ruled the café table for centuries. Every board is an original, drawn for its city — the felt, the points, the checkers.
The coach
The engine runs entirely on your device — no server, no waiting — and plays at the level of the strongest programs. The coach turns that strength into teaching.
Adventure & puzzles
The Adventure offers 60+ short challenges across nine chapters, from dice probabilities to cube and match decisions. The Daily Challenge adds a new position each day.
The house rules
One calm palette, real typography, and a board that fits your phone edge to edge. It installs from the browser, works fully offline, and speaks both English and French — proper FFBG vocabulary included.
The record
In a recorded development test against its 2-ply setting, CUBE Backgammon finished 16 points ahead. A close result, with uncertainty in both directions.
Measured on a phone, not a server rack. The analysis is usually done before the dice have settled.
The neural nets live in your pocket. Nothing uploaded, nothing shared, nothing to wait for on a plane.
Historical checker-play test, without the doubling cube: +0.016 points per game, approximate 95% CI [−0.068, +0.100]. This does not establish superiority or equivalence, or a professional-player rating. Read the results and their limits.
From the journal
Our latest posts on strategy, dice and the stories around the game.
Our order is blackjack, English checkers, backgammon, chess, Go, then full partnership bridge. The surprises are what dice do to backgammon’s search, why Go resisted position evaluation, and how hidden cards complicate bridge.
Read articleOur backgammon engine cannot follow every possible game to its ending. It needs a useful estimate of what each unfinished position is worth, so it can compare the moves that lead there. That estimate is at the centre of its decisions.
Read articleBuilding a backgammon engine raises a tempting question: how much can you settle by simulating more games? Bridge, a game my grandfather played brilliantly, shows why a simulation must also respect what the player can know.
Read articleThe felt is brushed, the coach is patient, and the first lesson takes two minutes.
Coming soon to Google Play.
