Copyright (c) 1980s ??
The game is played on a 7x7 board, with the following setup:
If White jumps to , the 2 adjacent black stones are flipped. If a black stone jumps to , both white stones are flipped to black.
This game can be easily extended to 3 or 4 players, and also to larger boards. With hexagonal boards, a growth is a move to an adjacent cell, and a jump is a 2 cell move (check Hexxagon which also has a ZRF). Check here for more information about Ataxx.