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Brainteaser Hollow Cube 131413

Brainteaser Hollow Cube 131413

$ 29.99

This is a Meffert's Hollow Brain Teaser Cube that's produced by the good folks over at Project Genius. They make various levels of challenging puzzles!

Project Genius uses a 5-star rating system for difficulty with 5 being the most difficult.  The goal of this puzzle is to make each side has 9 unique colors.

 Great for any fan of brain teasers!

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