shithub: plan9front

ref: 2aff96f17c4127617a48f75032c13e19cd3eb4a9
dir: /sys/games/lib/life/fisheater/

.....x.
......x
......x
...x..x
....xxx
.......
.......
.......
.......
.......
.......
.......
.......
.......
..xx...
...x...
xxx....
x......