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So Brilliant It Has It's Own Patent
Welcome to the intersection where intuition and imagination collide. Brainstring Advanced is an innovative clear plastic cube puzzle with multiple strings intersecting inside. It offers endless possibilities, but only limited solutions. Use the colored knobs attached to each string to manuever through the ingenius pattern of incisions outside the cube, resulting in string movements inside the cube. Your goal is to switch the outside knob colors without creating an impossible knot inside.
Warning: Choking Hazard -Small Parts. Not for children under 3 years.