My brain -

Hurts! Photographing this is harder than the puzzle itself. I've never completed it in five years. This is a 3D ball bearing maze which involves orientating it in every plane imaginable to roll the ball along the track without it falling off. If the ball does fall off the only option is to start from the beginning again. The Perspex globe is so reflective it is difficult to have enough light to see in without so many reflections that make it impossible to see in. I think the iPhone did well considering.

iPhone and levels and crop in snap seed.