Backgammon

Move all fifteen of your checkers into your home board and then bear them off. The first player to bear off every checker wins.

• White moves from the top-left round to the bottom-right home board; Black moves the opposite way.
• Roll two dice. Each die is a separate move. Doubles are played four times.
• You may land on any point not held by two or more enemy checkers. Landing on a single enemy checker (a blot) hits it and sends it to the bar.
• Checkers on the bar must re-enter in the opponent's home board before any other move.
• You must use both dice if you can. If only one can be played, you must play the larger one when possible.
• Once all your checkers are home you may bear off with an exact roll, or with a higher roll from your highest point.

Controls

Press Roll (or Space). Tap a checker to see its legal destinations highlighted in green, then tap a destination — moves using both dice with one checker are offered too. Tap the tray on the right to bear off. Undo takes back moves in the current turn.

Doubling cube & match

Before rolling you may Double the stakes. Your opponent either accepts (and owns the cube) or resigns the game at the current value. A gammon (loser has borne off nothing) scores double, a backgammon (loser still has a checker on the bar or in the winner's home) triple. Play single games or matches to 3, 5, 7 or 11 points (Crawford rule applies). Games are saved automatically.