Backgammon Rules

Two players, fifteen checkers each, and a board of twenty-four narrow triangles called points — backgammon is a race, but it's a race where you're also allowed to knock your opponent's runners back to the start, which is what keeps a game that's mostly about dice from ever feeling one-sided for long.

The board and the starting position

Each player's fifteen checkers begin in a fixed setup: two on their 24-point, five on their 13-point, three on their 8-point, and five on their 6-point (numbering each player's own points from 1 to 24, running in opposite directions for the two sides). Each player moves their checkers in one direction around the board, toward their own home board — the last six points — and then off the board entirely.

Moving with the dice

On your turn you roll two dice and move checkers a number of pips matching each die separately, either with one checker or split between two. Rolling doubles (a 4 and a 4, for instance) gives you four moves of that number instead of two. A checker can land on any point that's empty, held by your own checkers, or held by exactly one opposing checker — never a point held by two or more opposing checkers, which is "blocked."

Hitting a blot, and the bar

A single opposing checker sitting alone on a point is a "blot," and landing on it sends that checker to the bar, the strip dividing the two halves of the board. A player with a checker on the bar must re-enter it into the opponent's home board before making any other move, using a die roll that corresponds to an open point there — if every point that die could reach is blocked, that die (or the whole turn, if both are blocked) is forfeited. This is where the game's real tension lives: racing ahead too aggressively leaves blots exposed, and getting hit late in a close race can cost enough pips to lose a game that looked comfortably won.

Bearing off

Once all fifteen of a player's checkers are inside their own home board, they can start bearing off — removing checkers from the board entirely, one per die value that exactly matches a point still holding a checker (or a higher die if no checker sits on that exact point and none sit on any higher point either). A checker that gets hit and sent to the bar during bear-off has to re-enter and travel the entire board again before its owner can resume bearing off, which is why leaving a blot behind during this phase is a well-known late-game mistake.

The doubling cube

Most backgammon games for stakes use a doubling cube, marked 2 through 64, to raise the value of the game mid-play. Either player, at the start of their own turn, can offer to double the stakes; the opponent must either accept (taking control of the cube for any future double) or resign the game immediately at the current stake. The cube adds a genuine second layer of decision-making on top of the dice and the race itself — knowing when a position is strong enough to double, and when to accept a double rather than fold, is a skill set separate from moving checkers well.

Gammons and backgammons

A standard win is worth the value on the doubling cube. If the loser hasn't borne off a single checker by the time the winner finishes, that's a "gammon," worth double. If the loser hasn't borne off any checkers and still has a checker on the bar or in the winner's home board when the winner finishes, that's a "backgammon" — the game's own namesake result — worth triple. These bonus results are exactly why a player who's clearly losing a race still plays on rather than resigning immediately; escaping gammon or backgammon territory is worth real value even in a lost game.

The arguments this game actually produces

Touch-move causes more arguments than any other rule at the table — whether picking up a checker and setting it back down commits a player to that move — and most tables treat a checker as "moved" only once it's released on a new point, not merely touched. The second is whether a player must use both dice if only one legal sequence is available; the rule is that a player must use as many of the dice as legally possible, even if that means playing a worse move than skipping one die entirely would allow.

Origins: one of the oldest games still played as written

Backgammon's lineage traces back thousands of years to race games played with dice and marked boards in the ancient Middle East and Persia — the Royal Game of Ur and the Roman game of Tabula are both frequently cited ancestors, though the exact line of descent to the modern game is debated among historians rather than settled fact. The English name "backgammon" is documented from the 17th century, and the doubling cube — now central to how the game is actually played for stakes — is a much later addition, generally credited to American players in the 1920s.

Questions that come up mid-game

Can you choose not to hit a blot even if it's a legal move? Yes — hitting is never mandatory; leaving an opponent's blot alone is a legitimate choice, sometimes correct if hitting would leave you dangerously exposed in return.

What happens if you roll a number you have no legal way to play at all? You forfeit that part of the turn and play passes to your opponent — there's no penalty beyond the lost tempo, and it's a normal, common occurrence rather than a rules violation.