Ivan's Hinge - Where fun and brilliance converge! Articulating joints bend hither and yon. Your hands fly out of boredom and into action while your mind follows right along. Manipulate the swinging, hinged pieces of Ivan's Hinge. What starts out as simple pleasure in flexing vivid pieces & sections leads to a head-scratching challenge when you attempt to match one of the brilliant pattern cards. Knit together a solution in your mind - Then, play it out by folding, looping, turning, and bending. All wrong? Untwist, unweave, unwind, and try it again! Finally, youll alight on a solution. Then, Aha! Another! After just a couple of successes, you'll be aiming to wrap your mind around a solution for every pattern card included! Match your creation to the pattern pictures once, and youll resolve to re-solve Ivans hinge again & again! It's an irresistible-fidgety toy and fast-forming fun all packed into one! While playing through the collection of tricky and baffling brainteasers, youll understand several things: 1. When colors & patterns align the way you envision them it's a beautiful thing. 2. When they dont bending, folding, turning & looping Ivans Hinge is still addictive. 3. Ivan Moscovich, the celebrated puzzle creator, is indeed a genius. Unhinge an adventure of tactile, brain-boosting excitement with the amazing, brilliant, and GENIUS Ivan's Hinge. Ivans Hinge Fold, loop, bend, twist, and turn to find a solution! Patterned challenge cards invite curiosity, logic, determination Brainteaser & mind-builder - refines visual spatial skills Created by famed puzzle creator Ivan Moscovich Ideal for brain stimulation and relaxation Appeals to a wide range of ages Includes 1 Ivans Hinge Puzzle 56 Challenge Cards included Exceptionally high quality construction and materials