Great Y Cube

This is one of the most difficult packing problems that you’ll find. This crafted wooden brain teaser cube contains 25 identical Y shaped pieces.

The objective is to take the elements out of the box and then build a perfect cube, using all of the pieces. 
You can also try building other rectangle shapes by using part of the pieces.

It comes with a nice looking base and a lid for keeping all the pieces together.

Considered to be a very challenging puzzle.