Copyright (c) 1999 Mathieu Rivier,
This game is played on a 8x8 square
board with the following setup:
||ORBITING - Stones (or planets) may move
in orbits around another (orthogonal) adjacent stone (the gravity
center) of either color. This means that the moving stone can move to
an empty cell which is orthogonally adjacent to the gravity center.
||This implies that isolated stones
||Orbits are multiple, after one
orbit, the moving stone can continue to move, if the direction of
the orbit is smooth (e.g., if
it began clockwise, it must continue counterclockwise, and so
on..., see first diagram)
||GRAVITY PUSHES - Another moving
possibility is that if there is a 3rd planet in front of a
possible orbit, the orbiting stone can move to its place and push that
stone to the immediate next empty cell (in the same direction of the
||If that next immediate cell is not
empty, the gravity push is not possible.
||GOAL - The first player that
moves all of his stones into the initial adversary setup wins.
||An orbiting example
marked stone can make several orbits. Two possible ones are  to ,
or  to  to .
In the second orbit, the
stone could not move  to  to [a], since the orbit to 
was clockwise, then to 
was counterclockwise, and the orbit curve to go to [a] (now
clockwise again) would bump into the upper violet stone.
||A gravity push
the same example, the marked stone could move  to
and then moving clockwise would encounter the upper violet stone,
pushing it to the marked red dot.
If the red dot
cell was occupied by any cell, this move was not possible!
Attraction uses the same concept of Halma
and Chinese Checkers.