Project Genius"Uwe Meffert's Puzzles: Skewb Ultimate" Brain Teaser Puzzle, Assorted Twist the two halves of the puzzle to change the colors on each facing. Solve by getting a solid color on each side. A challenging brain teaser puzzle for adults and children alike! Display on your nightstand, shelf, or living room as a decorative conversation piece. The perfect gift for the puzzle enthusiast in your life!