Hacker News new | ask | show | jobs
by NeoTar 593 days ago
You are correct, the 7 x 7 x 7 is the minimum where a perfect cube of cubes is impossible. The Wikipedia article shows the issue with the corner cubes.

Apparently the 7-cube bulges slightly which helps to hide that the larger sized edges / corners

https://en.m.wikipedia.org/wiki/V-Cube_7