USBGF

Saving gammon is addressed explicitly (Rule 4.5.3).; The match score must be recorded (Rule 4.6.1) and updated after the completion of each game (Rule 4.6.2).; Errors in scorekeeping are handled by rule (Rule 4.6.3).

Dice requirements are set out in general terms and for selection and use (Rule 3.2.1, Rule 3.2.2).; The number of dice used during play is specified (Rule 3.2.2.1), as is the mixing of dice (Rule 3.2.2.2).; Dice must be produced through an approved randomisation device (Rule 3.2.3, Rule 3.2.3.1).

Errors in the starting position are addressed explicitly (Rule 4.2.1).; The opening roll is governed by rule, including when produced using a baffle box (Rule 4.1.3.2.2).; Dice must be random (Rule 4.1.1) and handled according to rule (Rule 4.1.2).

Players alternate rolling two dice and moving checkers toward their home board. A roll of doubles is played twice.

A game is won by bearing off all fifteen checkers. The margin determines the value, and the doubling cube multiplies it.

The rules above govern sanctioned tournament play. Several widely used conventions are optional and must be agreed or specified by the event: Automatic doubles, beavers and the Jacoby rule are treated as options rather than defaults (Rule 4.4.11).; Dice on checkers: whether this invalidates a rol...

The cube has a defined initial position, current value and current position at any point in the game (Rule 4.4.1, Rule 4.4.2, Rule 4.4.3).; Which actions constitute accepting or rejecting the cube is specified (Rule 4.4.6).; Ambiguous and inappropriate cube handling is addressed (Rule 4.4.7).