The Brainstring Original Retro features the most interesting and mysterious strings that can be interchanged with each other without creating a knot. Change the position of the strings to move the pegs. A knot will form in the middle. Solve the knot in the middle so that all strings go straight. This beautiful 3D logic puzzle enhances fine motor skills and spatial reasoning skills through imagination and brain.
, Note: Video is for Demonstrational purposes only, ,
