Cube Libre puzzle

This a great little puzzle by Mineyuki Uyematsu that I saw on Puzzle Will Be Played last week. http://puzzlewillbeplayed.com/444/CubeLibre/ It's another great example of a printable puzzle that requires no support on RepRap printers. These 10 puzzle pieces can make both an 8x8 square and a 4x4x4 cube. I designed a special box in Tinkercad that allows the puzzler to play both games. https://tinkercad.com/things/8Jzfov4OYUA