ref: 52a367f3ea8b6fa256b2a9b0e52c5c2d557a9fc3
dir: /sys/games/lib/life/piston2/
...........x................. xx........xx...............xx xx.......xx................xx ..........xx..xx............. ............................. ............................. ............................. ..........xx..xx............. xx.......xx................xx xx........xx...............xx ...........x.................