From the Manufacturer
Building on the success of our top selling puzzle, this advanced version adds more sides, colored strings and easy to grasp rubber tips. More challenging than the original, Brainstring advanced will stretch your puzzle solving skills to the next level.
BS1934 Features: -Brain string advanced.-Puzzle will tie your brain in knots.-Real challenge is untangling the knot in the middle.-Make the puzzle easier or harder based on how much you tangle it up.-Stretch your imagination to find the solution. Color/Finish: -Pull the rubber tips to slide the colored strings through the open slots of the sphere.-Creating a solid color on each side is a small task.