Fat Brain Toys | Ivan's HingeIvan'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