ref: be36fab405e70b01b319cfa3aa2cd2ca8feaf6c6
dir: /sys/games/lib/life/piston2/
...........x................. xx........xx...............xx xx.......xx................xx ..........xx..xx............. ............................. ............................. ............................. ..........xx..xx............. xx.......xx................xx xx........xx...............xx ...........x.................