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Ludus Latrunculorum on Arcadia

Ludus latrunculorum, "the game of little soldiers" (or little bandits), was Rome's serious strategy game, the legionary's answer to chess centuries before chess existed. Boards and glass counters have been excavated across the whole Empire, from Hadrian's Wall to the Syrian frontier, and Roman writers praised skilled players who could win with their "glass soldiers".

Arcadia's version uses the standard modern reconstruction: an 8x8 board, twelve men each, rook movement, and the signature custodian capture: trap an enemy between two of your men and he is taken. You play the white glass; the AI Brigand plays the dark.

How to Play

Each side starts with twelve men: a full back row plus four in the center of the second row.
On your turn, move one man like a rook: any number of empty squares along a rank or file.
Finish a move so an enemy man is pinned directly between your moved man and another of your men to capture him.
One move can flank and capture several enemies in different directions at once.
Win by cutting the enemy down to two men or leaving him without a legal move.

Core Rules

Movement is orthogonal only: no diagonals, no jumping.
Captures are custodian: the enemy man must be orthogonally between two of your men, and the trap must be closed by your move.
Moving your own man INTO a gap between two enemies is safe; only the closing move captures.
A single move can capture in several directions simultaneously.
A player reduced to two men loses (two men cannot flank anyone).
A player with no legal move loses by blockade.
After 60 consecutive moves without a capture, the side with more men wins; equal counts is a draw.

Strategy: Pairs, Files & the Slow Squeeze

Hunt in pairs. A lone man captures nothing; keep men within one move of a partner so every advance threatens a flank.
Control open files: a rook-mover on an open file projects threats the whole length of the board.
Bait with safe entry: walking into a gap between two enemies is legal and safe, and it often forks two capture threats of your own.
Count exchanges before opening a melee: whoever closes the last trap in a cluster usually wins it.
Ahead on men? Trade and stall toward the 60-move siege rule. Behind? Force contact and complicate.

Practical Tips

Tap a man to see every square he can reach; red dots mark moves that capture.
The quiet-move counter under the board shows how close the siege rule is.
Watch for the Brigand's pincers: two dark men on one rank or file with a gap between them are a trap waiting to close.
Edge men are easier to flank: keep your force connected toward the center.

Ludus Latrunculorum rules, history & strategy guide

FAQ

How do captures work in Latrunculi?

By custodianship: finish a move so an enemy man stands directly between the man you moved and another of your men, orthogonally. The trapped man is removed. One move can capture several men in different directions.

Is it safe to move between two enemy men?

Yes. Only the move that closes the trap captures. Voluntarily stepping into the gap between two enemies is a legal and often strong maneuver.

How do you win?

Reduce your opponent to two men (two men can no longer flank anything), leave him without a legal move, or lead on men when 60 consecutive moves pass without a capture.

Are these the original Roman rules?

The full Roman rules do not survive, so Arcadia follows the reconstruction most historians and clubs use: 8x8 board, rook movement, and custodian capture, all consistent with the archaeological boards and ancient descriptions.