shithub: plan9front

ref: 3e1a75d08f0ef3edb6fb53690b8dcbd5af23b376
dir: /sys/games/lib/life/fisheater/

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