Copyright (c) ? Christian Boineau

This game is played on a 7x7 square board with the following setup:

SOLDIER - Move by sliding any number of empty cells on a straight line (like the Chess Queen).
Soldiers may capture an enemy piece.
Soldiers cannot move or pass through the central cell (The Castle).
KINGS - Move to an adjacent (orthogonal or diagonal) empty cell.
Kings may capture an enemy piece.
The King cannot enter the castle if an enemy soldier is at moving distance of the castle (i.e., if an enemy soldier could move into the castle, if it was allowed)
SUB-GOALS - When a player captures the enemy King, he gets 1 point, or if his King enters the castle, he gets 2 points. After any one of those cases, the game resets to the setup position and the other player restarts the game.
GOAL -The player who first achieves a specific number of points (say, 5 or 10) wins.

An example

Black to move. He must capture the soldier at d2 with a5:d2. Now the Green King captures c2:d2 and threats to enter the castle and gain 2 points. So, the Black King moves to e3 sacrificing himself. And so, Black just wins 1 point.

There is more information at this webpage (in French).