ref: 1eadcba462d82b73eecfcc0d7aabd56cdc3d13e1
dir: /sys/games/lib/life/piston2/
...........x................. xx........xx...............xx xx.......xx................xx ..........xx..xx............. ............................. ............................. ............................. ..........xx..xx............. xx.......xx................xx xx........xx...............xx ...........x.................