Pente Grammai

1. Set up. Each player places one counter on every endpoint on their side of the five lines. Terracotta takes the first turn in this implementation.
2. Throw and move. Roll one die, then move one highlighted counter by exactly that many points around the route. You may pass occupied points.
3. Check the landing. You cannot finish on an occupied ordinary point, even if your own counter occupies it. Either sacred endpoint accepts any number of counters from both players.
4. Movement is compulsory. If at least one move is legal, you must make one. If every landing is blocked, you miss the turn.
5. Gather—and sometimes leave. A counter landing exactly on your opponent-facing sacred endpoint moves inward onto that half. It remains eligible to move again; if it is the only counter with a legal landing on a later throw, it must leave from that endpoint.
6. Win. Gather all five counters on your opponent-facing half of the sacred line.

This is Schädler’s documented playable suggestion, not a recovery of the ancient rules.

1. Begin in reserve. All five counters start off the board. Terracotta takes the first turn in this implementation.
2. Choose entry or movement. After the throw, you may use an offered move to place one reserve counter on your starting corner, or move a counter already on the route by the exact die result. Entry consumes the turn.
3. Pass over counters. Occupied points do not obstruct the journey; only the point where the move finishes matters.
4. Capture a blot. Landing on a point occupied by one opposing counter knocks it into reserve. That counter must enter again on a later turn.
5. Build a yoke. Two or more of your counters may share a point. An opponent cannot land on that point, though they may pass over it.
6. Reach the holy line exactly. Each player has one entrance on their left-hand side. A counter landing there moves onto the holy line and is safe, though it remains an optional mover until the game is won.
7. Pass or win. If no move is legal, you pass. Gather all five counters on the holy line to win.

Kidd presents this as a possible reconstruction resting on inference, not preserved ancient rules.

1. Set up. Each player occupies the five endpoints on their own side. The replay seed decides who starts.
2. Throw and move. Move one highlighted, unpinned counter clockwise by exactly the die result. Counters may pass and share endpoints.
3. Create a threat. On an ordinary line, a formation of at least two counters pins the opposing formation when it strictly outnumbers it—for example, two against one or three against two.
4. Answer on the next turn. Pinned counters cannot move. The threatened player gets that turn to move another counter and restore equality on the line.
5. Remove unresolved counters. After the response move, every counter that is still outnumbered on a line that was already threatened is removed. Several unresolved formations can lose counters together. The sacred middle line is immune.
6. Re-enter. On a later turn, a removed counter may return to any of the five endpoints on its own side. Choose the numbered destination marker; re-entry consumes the turn.
7. Win by exchange. Move all five counters onto endpoints that belonged to your opponent at setup.

Perimeter Line Battle is a provisional modern design, not a claimed reconstruction of the ancient game.