ref: f9efec77c5dc534e4ebcaf843cf5a140cde7a16c
dir: /sys/games/lib/life/squarecap/
x.............. .x............. ..x............ ...x........... ....x.......... .....x......... ......x........ .......x....... ........x...... .........x..... ..........x.... ...........x... ............x.x .............xx