Brainstring Original Retro Brain Teaser Toy

BRAINstring original retro brain teaser toy in EUC with instruction booklet. Great challenge for children & adults! The Brainstring Original contains mysterious strings that can be interchanged with each other without creating a knot. Change the position of the strings to move the pegs. Solve the knot in the middle so that all strings go straight. A great game to learn problem solving skills. The mystery of Brainstring Original isn't just how to untie a twisted ‘knot' of strings in the center, but how it can be that all its strings can be interchanged - WITHOUT creating a knot! Four groups of different colored strings, four strings per group, moving up, down & around all six sides of a polycarbonate shell…...beyond just tying or untying a knot, what kind of beautiful symmetries can you create? Brainstring Original isn't just a puzzle—it's a work of art. The main goal is to move the coloured buttons from hole-to-hole to create a solid color on every side and untangle the knot in the middle.