Back in 1992 inventor Guido Lap came up with the idea of interchangeable strings. Ten years later Brainstring Original was introduced and almost immediately became a worldwide bestseller. To date, Brainstring Original is played in over 40 countries and people are still amazed by its seeming simplicity and surprised by its infinite possibilities. Most recently – after a couple of years in development – there’s a new, even more inspiring puzzle: Brainstring Advanced.What’s new with Brainstring Advanced?