ref: f3b5bcffceb05ce2b9f8c19d2e0721f3e54098e8
dir: /sys/games/lib/life/piston2/
...........x................. xx........xx...............xx xx.......xx................xx ..........xx..xx............. ............................. ............................. ............................. ..........xx..xx............. xx.......xx................xx xx........xx...............xx ...........x.................