Backgammon is a board game that humans have played for centuries. The game board is a large, foldable storage box opened to display left and right sections (outer and inner boards). As dictated by dice throws, the player moves 15 pieces (checkers, counters, stones, chips, draughts, discs or men) around 24 spots (points) that look like long triangles. Every six spots are broken into quadrants on the tops and bottoms of the boards. The boards are divided by a central, raised bar that features metal hinges.
The player selects a match score (1, 3, 5, 7, 11 or 15 points) across three difficulty levels (Easy, Normal and Hard). Via strategy and the luck of the dice, they move their pieces by color (white or black) around the boards in a horseshoe direction from a starting point to the home quadrant closest to the small, vertical box that typically stores their pieces. Their goal is to transfer or bear off pieces to the box before their opponent.
When one piece falls on a point occupied by one of the opponent's pieces (a blot) the game considers the move a hit against that piece and transfers it automatically to the bar. If the player rolls doubles, they can play the numbers on the dice twice. They achieve a gammon, or double the value of a normal game, when they win without their opponent bearing off any pieces. They achieve backgammon if their opponent has all pieces still on the board and one or more pieces on the bar or their home.
