For those of you that have mastered our regular Shipper's Dilemma, here's your next challenge!

 

This Shipper's Dilemma-Z puzzle (and the Shipper's Dilemma Y) are related, and are what we would consider to be very difficult puzzles!

 

The object is to make a perfect cube from the 25 "Z" shaped wooden puzzle pieces. The Z shape is also considered to be a "N" by some Pentominoes and Polyominoes gurus.

 

At this time, there are only four known solutions!   

 

Object: Empty and re build the cube with the 25 wooden puzzle pieces.
Difficulty: Extreme