Ribbon

Ribbon. As with other puzzles of Osanori Yamamoto's, the objective of the Ribbon puzzle is to fit a 3×3 cube shape inside the box.   Each of his designs have varying levels of box complexity.  This box has two corners that are full height and two open corners that allow movement of the pieces.  Two of the three pieces fit in quite nicely, but the third is the challenge.  A great- Ribbon.