The objective is to either capture or immobilize all the enemies stones. The principle of play is to surround an enemy on two sides, in a horizontal or vertical line. Black plays first. Dogs move as rooks in chess; orthogonally (horizontal or vertical, but not diagonal). A Dog is captured when it is surrounded on two orthogonal sides. Multiple stones can be captured when surrounded on two orthogonal sides. A stone can be played inside two enemy stones without being captured. The outside walls cannot be used to capture Dogs. First player to kill all his opponents Dogs wins. A player can also win by blocking up the enemy Dogs such that they cannot move.
 
Petteia is an ancient greek game. The Greeks played this game by at least the 5th century BCE. Plato tells us that Petteia originally came from Egypt. Obviously the game is very similar to the Egypt game Siga. All properties we know about the ancient Petteia are fullfilled by Siga. Unfortunately it is not possible to create a Zillions variant of the Siga game. Because there is a move order which can't implemented in a ZRF-file with an acceptable result.