There are 17 pieces with 3 different shapes. Your assignment is to pack them into a perfect cube that will fit within the base and cover of the box. Only master packers will be able to solve this one. Originally called Conway's Packing Box, it was developed by a Cambridge University Mathematician who said it is nearly impossible to do based on randomly trying to fit the pieces.
The solution requires high analytical skills. Mathematicians and engineers love it. Creative Crafthouse has a brilliant step by step presentation of the analytical process required to solve this puzzle, prepared by Mike Czerwinski.
Dimensions: 3.4" cube
Difficulty level: 5 (out of 6)
Suggested age: 15+
So far I'm the only one (family of 5) that has been able to solve this one repeatably. It's a simple solution but ones mind gets wrapped around a specific solution and doesn't want to stray, yet stray it must. Great puzzle and quality.