shithub: plan9front

ref: 9de5aac7a29564ac0e1574d17d2589eefe8de3e6
dir: /sys/games/lib/life/fisheater/

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