AI-friendly board game rules summaries — use with Claude, ChatGPT, or any AI assistant
The Royal Game of Ur is one of the oldest known board games, originating in ancient Mesopotamia around 2600-2400 BC. It is a two-player race game from the tables family, similar in concept to modern backgammon. Players race their pieces along a shared track across the distinctive H-shaped board, with the goal of bearing all pieces off the board before their opponent. The most widely played modern rules follow Irving Finkel’s reconstruction based on a cuneiform tablet from the British Museum.
Players alternate turns. On each turn:
Enter a Piece: Move a piece from your starting area onto the first space of the board.
Advance a Piece: Move a piece already on the board forward along the track by the dice roll value.
Capture: If your piece lands on a space occupied by an opponent’s piece (and it is not a rosette space), the opponent’s piece is captured and returned to their starting area. They must re-enter it on a future turn.
Bear Off: When a piece reaches the end of the track, it is borne off (removed from play permanently). An exact roll is required to bear off.
Rosette Bonus: Landing on a rosette square grants an immediate extra turn. Rosettes are safe spaces where your piece cannot be captured.
The first player to bear off all of their pieces from the board wins. There is no point scoring; it is a pure race.
Dice: Roll 3-4 binary dice. Result = number of marked corners facing up (0-4).
Rosettes: Safe squares. Land on one = extra turn. Cannot be captured here.
Capture: Land on opponent’s piece (non-rosette) to send it back to start.
Win: First to bear off all pieces.