Backgammon

The rules of backgammon serve the same function as the rules created for any other game. They exist to avoid rather than to create arguments. The official Rules of the International Backgammon Association appear below.

  1. The game is played by two people.
  2. Play of the men is governed by two dice, thrown (cast) from a cup in which the dice are shaken before casting.
  3. For the first game, either player may ask to roll for choice of seats, men, dice. Otherwise, they just sit down, set the men up, and play.
  4. At the start of any later game, either player may ask to mix the dice. In this case, he shakes the four dice together in one cup and rolls them out. The Opponent selects a die, then the roller, then the Opponent, with the roller taking the last one.

    5. THE THROWS

  5. For the opening throw, each player throws a single die. Every tie requires another opening throw. Whoever throws the higher number wins, and for his first move plays the numbers upon both dice. After that, each player in turn throws two dice.
  6. The dice must be rolled together and come to rest flat (not "cocked") upon the boards at the player's right, otherwise they must be thrown again.
  7. There must be a rethrow if a throw is made before an adversary's play is completed or if either player touches a die before it comes to rest.
  8. A play is deemed completed when a player moves his men and Starts to pick up his dice. If he Starts to pick them up before playing all numbers he legally can, his Opponent has the right to compel him to complete or not to complete bis play. A roll by the Opponent is an acceptance of the play as made. (See rule sixteen.)

    9. THE PLAY

  9. The play of the men consists in:
    • moving a man (or men) the exact number of points indicated by the number on each of the two dice thrown;
    • entering a man, in the adversary's home board, on a point corresponding to the number on a die thrown;
    • bearing off a man in the player's home board, when no man is left outside that board or on the bar, in accordance with rule fourteen.
  10. Doubles require four plays of the number on the dice.
  11. Plays must be made for both dice if possible. Either number may be played first. If either number thrown may be played, but not both, then the higher number thrown must be played.
  12. No play may be made which lands on a point held by two or more of the opponent's men.
  13. When a play lands on a point occupied by a single man of the opponent's, such a man is hit and must be lifted from the board and placed on the bar for entry in accordance with rule eight.
  14. A player having a man on the bar may not play any other man until that man has entered.
  15. When in a position to bear off, you may bear off a man from a point corresponding to the number on a die thrown or from the highest occupied point which is lower than the number indicated by a die. If a number is thrown for an unoccupied point, no man below can be borne off, for such number, while any man remains on a higher point. You are not required to bear off a man if you are able to move a man forward on the board. Rule ten applies here as in all other situations.

    16. ERRORS

  16. If an error has been made in the setup it must be corrected if either player notices it before the second play of the ganie has been completed.
  17. If an error in play has been made, either player my require its cor-rection before a subsequent throw, but not thereafter.

    18. SCORING

  18. A game is won by the player who first bears off all his men.
    • A gammon (double game) is won if the adversary has not borne off a single man. This doubles the count.
    • A backgammon (triple game) is won if the adversary has not borne off a single man and has one or more men in the winner's home board or upon the bar. This triples the count.
  19. Doubling game. The count is raised:
    • Automatically: Each tie of the opening throw doubles the previous count. Unless an understanding has been reached as to the method and limitation of automatic doubles they are not played.
    • Voluntarily: Either player may off er the first optional double of the previous count. After that, the right to double the previous count alternates, being always with the player who has last accepted the double.
    In every case, a double may be offered only when it is the player's turn to play and before he has thrown the dice. A double may be accepted or declined. The refusal of a double terminates the game, and the player refusing loses whatever the count may amount to before the double was offered.

The rules of the International Backgammon Association are subscribed to by most of the foremost players in the world. They are in force at the annual tournaments held at Grand Bahama Island and at Las Vegas. Essentially, they derive from the rules prepared in 1931 by the Backgammon and Cards Committee of the Racquet and Tennis Club of New York City.