Move all 15 checkers toward your point 1, then bear them off. The point labels follow the chosen view; the other player moves in the opposite direction. Each player rolls one opening die. Ties reroll; the higher roller plays both numbers.
Each die is a separate move. Doubles give four moves. Land on an empty point, your own checkers, or one opposing checker (a blot). A hit blot goes to the bar. Two opposing checkers block a point. You must re-enter every checker on your bar before moving others.
You must play as many dice as possible. When only one of two different dice can be played, use the higher if possible. Highlighted moves preserve a complete legal turn. Move the same checker twice only through a legal intermediate point. If two dice can reach the same destination, choose the labeled die below the board.
Bear off only when every remaining checker is in your home board (points 1–6). Use an exact die, or a higher die only for your farthest checker. Being hit removes this eligibility until the checker returns home.
A normal win scores the cube; a gammon (loser has none off) scores twice the cube; a backgammon scores three times if that loser also has a checker on the bar or in the winner’s home board. No legal moves means an automatic pass.
Offer a double before rolling, after the opening turn, if the cube is centered or yours. Take doubles the cube and transfers ownership to you. Drop concedes at the old value. The first game after either player reaches one point from the match target is the Crawford game: no doubling. The cube returns afterward.
Moves are tentative until Confirm Turn. Undo works only before confirmation. Roll shortcut: R; undo: U; confirm: C. Use Tab and Enter for every board point, or select a checker and use the labeled destination buttons.
Computer: Easy adds variety to a basic race/bar evaluation. Medium values made points and avoids blots. Hard evaluates all legal complete turns with prime, exposure, and racing weights. Cube decisions use an approximate position estimate with match-score adjustments. This is heuristic AI, not a tournament neural engine.
Rules reference: Backgammon Galore and its match-play reference.