Pente Grammai ("five lines") is an ancient Greek board game described by Roman writers as the most popular game in classical Athens — older than chess by at least a millennium. The exact rules are partially reconstructed from inscriptions and archaeological boards. This implementation follows the most cited reconstruction.
Two players, each with 5 stones — one on each of the five horizontal lines — start from opposite ends. Throw a knucklebone (values 1, 3, 4, or 6) and move one stone forward along its line by that amount. Land exactly on an opponent's stone to capture it, sending it back to its starting square. The middle "sacred line" (hiera gramme) is special: stones resting on it cannot be captured (and captures cannot be made there), but they still move forward like any other stone. A stone on its own starting square is also safe. Move a stone past the far end of its line to bear it off — the first player to bear off all five stones wins.
Partial. Multiple plausible rule sets exist; the exact rules are debated by historians. This implementation uses the most-cited Sweetser reconstruction.
Far simpler — five stones per side and one type of move. Closer in spirit to draughts (checkers) but with a unique sacred-line mechanic.
Mentioned by Sophocles, Aristophanes, and Plato as the most popular game in 5th-century Athens. Boards have been excavated at the Agora and across the ancient Greek world.
5–10 minutes once the rules are familiar.
Pente Grammai — literally “five lines” — is an ancient Greek race game mentioned by writers from Alcaeus to Sophocles and depicted on Greek vases (most famously Achilles and Ajax at their game). The exact rules did not survive, so this is a plausible reconstruction: race your five pieces along the lines and bear them all off before your opponent.
The board is five parallel lines (with later versions adding a divided grid). Each player has five pieces. The central line is the sacred line (“the sacred line” was a Greek proverb for a last resort — “to move the piece from the sacred line” meant making a desperate final play).
You roll knucklebones (astragaloi), which land on values of 1, 3, 4, or 6 — the four stable faces of an ankle bone. Move one piece the thrown number of spaces along its track toward the far end. A piece that moves past the last space bears off the board.
Land exactly on a space occupied by a single opposing piece and you capture it — the captured piece is sent all the way back to its start. This is the heart of the game: a well-placed capture near the finish undoes most of an opponent’s progress.
The first player to bear off all five pieces wins. Because only one piece moves per throw, tempo is everything — every roll is a choice about which piece to advance, which to keep safe, and which capture to set up.