Ancient Rome · Strategy · 2 Players
How to Play Ludus Latrunculorum
Ludus Latrunculorum — the "Game of Mercenaries" — was Rome's favourite strategy game, played across the Empire for over 400 years. Boards have been found scratched into the steps of the Forum, at Hadrian's Wall, and among the ruins of Pompeii. Poets Ovid and Martial both wrote about it. Two players command a Dux (commander) and soldiers on a rectangular grid, capturing by sandwiching enemy pieces.
The Board and Pieces
The game is played on a rectangular grid — traditionally 8×12 squares, though exact board sizes varied by region and era. Each player has an identical set of pieces:
- Soldiers (latrones) — regular pieces, each player has the same count
- 1 Dux (commander) — a special, more powerful piece
At game start, pieces are arranged in rows at opposite ends of the board. The Dux is placed in the back row.
Movement
All pieces — both soldiers and the Dux — move like a chess rook: any number of squares horizontally or vertically, with no jumping over other pieces. Diagonal movement is not permitted.
The Dux moves identically to soldiers in standard movement but carries elevated strategic value because losing it is a decisive disadvantage.
Capturing — Custodian Rule
A piece is captured by custodian capture: you manoeuvre two of your pieces to flank an enemy piece on both sides along a straight horizontal or vertical line. The flanked piece is immediately removed from the board.
- A piece may safely move into a flanked position — moving between two enemy pieces does not capture it. Only a stationary piece flanked by two enemies on a move is captured.
- Corner captures: the board edge counts as a custodian on one side — a piece against the wall can be captured by a single enemy on the open side.
- The Dux is captured the same way as a soldier — flanked on two sides. There is no special protection for the commander.
Winning
The game ends when one player has either:
- Captured all of the opponent's pieces, or
- Left the opponent with no legal move (all pieces pinned or blocked).
That player wins.
Strategy Tips
- Use the Dux as an anchor. The Dux's rook movement lets it control entire ranks and files. Position it to threaten multiple captures simultaneously.
- Pin pieces against the wall. A piece on the edge only needs one custodian to be captured — the board itself acts as the second.
- Don't rush captures. Setting up a double threat (where your opponent must lose a piece regardless of what they do) is more valuable than a single immediate capture.
- Protect your Dux. Losing the Dux is not an instant loss, but it removes your most flexible piece and often leads to a cascade of further losses.
Cultural Context
Ludus Latrunculorum was played across the Roman Empire for over four centuries — from Roman Britain to Roman Egypt. Board fragments and carved gaming grids have been found at military forts, public baths, forum pavements, and private homes, suggesting the game was played by soldiers and civilians alike.
The poet Ovid recommended it in his guide to seduction; the satirist Martial praised skilled players; and an anonymous poem called the Laus Pisonis devotes lengthy praise to a nobleman's mastery of the game, comparing his tactical brilliance to a general commanding legions. The Latin word latrones (mercenaries, robbers) for the pieces lives on in the modern Spanish word ladrón (thief) — a 2,000-year linguistic survival of a game.
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