ref: 86eb8ea6bbbf031d71cf0fa58f468cd3ddc4e7f3
dir: /sys/games/lib/life/squarecap/
x.............. .x............. ..x............ ...x........... ....x.......... .....x......... ......x........ .......x....... ........x...... .........x..... ..........x.... ...........x... ............x.x .............xx