Copyright (c) 2003 Robert A. Kraus
The game is played on a 8x8 square board with the following setup:
This is a typical position after two turns. If the white stone at a2 slides to cell  it will be removed together with all the marked stones.
If f3 slides to h1, there is no piece removed, since the moving stone stopped because of a wall.
There is a ZRF to play Fission with Zillions.