ref: 5f7a6b7ea3c4ae1b51beffe3309e9b6b0491e71f
dir: /sys/games/lib/life/squarecap/
x.............. .x............. ..x............ ...x........... ....x.......... .....x......... ......x........ .......x....... ........x...... .........x..... ..........x.... ...........x... ............x.x .............xx