ref: 13785bbbef60f5c13aa973c1e7d4277aa55f6a2d
dir: /sys/games/lib/life/squarecap/
x.............. .x............. ..x............ ...x........... ....x.......... .....x......... ......x........ .......x....... ........x...... .........x..... ..........x.... ...........x... ............x.x .............xx