Think You've Solved It? Think Again. The Brain Twist Transforming Puzzle is a unique, magically-transforming, brain-teasing, manipulative puzzle. This puzzle is addictive fun; you won't be able to put it down! Brain Twist is a great desktop accessory for adults and the perfect "quiet car toy" for kids. fun for all ages! "Solution Hints" guide booklet included. Strain Your Brain with Brain Twist!. This transforming, twisting puzzle is sure to keep your brain hard at work The object is to get matching colors on each side of the puzzle by twisting corners The challenge is that the unit flips inside out, and the puzzle is not solved until both sides are complete Hours of brain-twisting fun that is easy to tote on trips or in the car Includes booklet with "solution hints"