Royal Game of Ur · Rules guide
Royal Game of Ur rules: how to play
Seven pieces, four pyramid dice and a fourteen-square course. How the shared middle lane works, why the central rosette is the best square on the board, and how the modern rules were reconstructed from a Babylonian tablet.
The short answer
- Each player races seven pieces along a fourteen-square course and off the board.
- Four tetrahedral dice give 0–4, with 2 the most likely roll and 0 or 4 rare.
- Your own row is safe; the shared middle lane is the only place pieces can be captured.
- Landing on a rosette grants another roll, and the central rosette is also a safe square.
- Bearing off requires an exact roll; the first player to remove all seven pieces wins.
The board and the route
The Royal Game of Ur is a race for two players on a board of twenty squares. Each player has seven pieces, and the aim is to run all seven along a fourteen-square course and off the far end. It is about 4,500 years old, and it plays like a modern game — tense, fast and full of decisions.
- The board is two blocks of squares joined by a bridge: a 3×4 block, a 3×2 block, and the middle row running through both.
- Your own row is private. Your opponent can never touch a piece there.
- The middle lane is shared — and it is where all the fighting happens.
- Five rosettes ✿ are marked on the board, and landing on one gives you another roll.
The dice: four tetrahedra
Ur is played with four tetrahedral dice, each with two marked corners. Each die shows a mark half the time, so your roll is the number of marked corners showing: 0, 1, 2, 3 or 4.
| Roll | Ways out of 16 | Chance |
|---|---|---|
| 0 | 1 | 6.25% — you lose the turn |
| 1 | 4 | 25% |
| 2 | 6 | 37.5% — the commonest roll |
| 3 | 4 | 25% |
| 4 | 1 | 6.25% |
This distribution is the heart of Ur's strategy. A piece two squares in front of an enemy piece is in far more danger than one four squares ahead — and that single fact governs where you choose to stop.
If you have no legal move, or you roll a zero, your turn simply passes.
Moving, capturing and the safe square
On your turn, move one piece forward by the number rolled, or bring a new piece onto the board. You must move if you legally can.
The rules that matter
- One piece per square. You can never land on your own piece.
- Capture in the middle lane. Landing on an opponent's piece there sends it back to the start, to begin the whole course again.
- Your own row is safe. Pieces there cannot be touched.
- Rosettes give another roll — and the central rosette is also a safe square: while it is occupied, nobody else can land there.
Bearing off
To take a piece off the board you need the exact number — one more than the squares remaining. The first player to bear off all seven pieces wins.
Rule sets: Finkel, Blitz and Masters
No rulebook survives from 2600 BCE. What we have is a Babylonian tablet from about 177 BCE describing a later form of the game, deciphered by Irving Finkel at the British Museum — which is why the standard modern rules carry his name.
| Rule set | Pieces | Key differences |
|---|---|---|
| Finkel (standard) | 7 | The rules above: capture in the middle lane, central rosette safe. |
| Blitz | 5 | A capture also earns an extra roll, and the central rosette is not safe — faster and bloodier. |
| Quick | 3 | Finkel's rules with three pieces; a game in five minutes. |
| Masters / long route | 7 | Variants that route pieces differently or use the full twenty squares. |
All of them are reconstructions. The board and the pieces are archaeological facts; the exact rules of the third millennium BCE are an informed guess, and the fact that the guess produces a genuinely good game is itself evidence that it is close.
Common questions
How old is the Royal Game of Ur?
The boards found at Ur date to roughly 2600–2400 BCE, making it about 4,500 years old — the oldest board game whose rules we can reconstruct well enough to play.
How do the dice work?
Four tetrahedral dice, each with two marked corners. Your move is the number of marked corners showing: 0 to 4. Two is the most common result, and zero or four each come up one time in sixteen.
Where can pieces be captured?
Only in the shared middle lane. Pieces in your own row are completely safe, and the central rosette cannot be landed on while it is occupied.
What do the rosettes do?
Landing on one gives you another roll. The central rosette in the middle lane is also a safe square, which makes it the single most valuable square on the board.
Do we know the original rules?
Not exactly. The modern rules are Irving Finkel's reconstruction from a Babylonian tablet of about 177 BCE describing a later form of the game, combined with the physical evidence of the boards.
Is the Royal Game of Ur related to backgammon?
They belong to the same broad family of race games with dice, and Ur is an ancestor of that tradition, but there is no direct documented line from one to the other.
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