Backgammon, against the computer
A board of 24 points, 15 checkers per side, two dice and a doubling cube. This site explains the rules as the app applies them, and trains you with verified positions. Backgammon pits you against the computer, at 3 difficulty levels.
On phone and tablet
Screenshots of the published app, in a game against the computer. The app displays in landscape, with the device held sideways.


Where to start?
The rules
The board, dice and doubles, hitting and the bar, the two-dice rule, bearing off, scoring and the cube.
Learn
Getting started with the app, a few playing tips, and the odds of hitting a checker or entering.
Worked exercises
8 positions with a given roll, the solution and its explanation.
Frequently asked questions
Who starts, doubles, declining the cube, gammon, the Crawford rule.
Backgammon in a few lines
Two players move their 15 checkers in opposite directions, according to the dice. Each wants to bring all their checkers into their home board, the last 6 points, and then bear them off the board. The first to bear off all their checkers wins.
Two checkers on a point close it to the opponent. A single checker can be hit: it goes to the bar and must enter before any other move. The doubling cube lets you double the stake during the game.
To get off to a good start, read the two-dice rule: it often decides the only move allowed.