updates | June 07, 2026

What does the doubling cube do in backgammon?

A doubling cube is a cubical block, a little larger than a regular die, with the numbers 2, 4, 8, 16, 32, and 64 printed on its faces. It is sometimes simply called the cube. The purpose is to allow players to bet on the game as they are playing.

When can you use the doubling cube in backgammon?

The doubling cube is placed in the middle of the bar and is not controlled by either player. When a player feels he has the advantage in a game, that player can choose to offer a double before rolling the dice—effectively doubling the value of the game.

What is the Crawford rule in backgammon?

The Crawford rule states that if one player reaches a score one point short of the match, neither player may offer a double in the immediately following game. This one game with no doubling is called the Crawford game.

Can you start backgammon with a double?

During the course of the game, a player who feels he has a sufficient advantage may propose doubling the stakes. He may do this only at the start of his own turn and before he has rolled the dice. A player who is offered a double may refuse, in which case he concedes the game and pays one point.

Is Backgammon a skill or luck?

Backgammon is a game of skill, and the more skill you have, the more likely you are to win. That is proven time and time again in tournaments and match results. But it is proven only in the long run. In the short run, just about anyone can beat anyone given enough luck, and when you have dice, you have luck.

What is the Jacoby rule in Backgammon?

The “Jacoby rule”, named after Oswald Jacoby, allows gammons and backgammons to count for their respective double and triple values only if the cube has already been offered and accepted. The Jacoby rule is widely used in money play but is not used in match play.

What is the beaver rule in backgammon?

A beaver is only allowed in a money game session. To beaver means to redouble, retaining control of the cube, immediately after your opponent doubles. For more information see the glossary at Backgammon Galore.

What is Jacoby rule in backgammon?

Can you stack more than 5 in backgammon?

There is no limit to the number of checkers that can be on one point. When you have more than five checkers on a point, it is usually a good idea to stack some of the checkers on top of others.

What is a good PR in backgammon?

The best players in the world have a PR of about 3. That means, roughly, that for each move, the player would lose, on average, 0.003 points to the computer.

What is the best backgammon strategy?

The running game is the simplest backgammon strategy. It involves running your checkers towards your home board as swiftly as possible. As you might expect, if both players play a running game, whoever rolls better will win the game.

Can you stack more than 5 in Backgammon?

Where is the doubling cube in a backgammon game?

Each backgammon game starts with a value of one point. The doubling cube is placed in the middle of the bar and is not controlled by either player. When a player feels he has the advantage in a game, that player can choose to offer a double before rolling the dice—effectively doubling the value of the game.

What happens when a player accepts a double in backgammon?

When a player accepts a double, he takes control of the doubling cube and is the only player who can make the next offer of a double. Knowing when to accept a double and when to decline is a sign of a skilled backgammon player.

How is a game of Backgammon played for money?

Backgammon can be played as a series of games with players competing to reach a certain number of points to win or as a set number of games, after which the player with the most points at the end wins. Backgammon players who play for money play for a mutually agreed-upon stake per point.

Is there a maximum number of sides for a doubling cube?

Although any particular doubling cube has a limited number of sides, technically there is no maximum point value for a single game. You don’t need to have a cube to play with doubling rules—a pencil and paper can be used as an effective substitute.