ref: 99f79e390d46e8c51ad7a628919e29e8b27335f0
dir: /sys/games/lib/life/billiard6/
..........xx.. ......xx..x... ......x.x.x... .......x..x.xx ..........x.xx ..........x... .xx.....x.x... .x.x....xx.... ..x...xx...... .......x...... xxxxxxx....... x............. ...xx......... ...xx.........