This puzzle is strongly reminding of the numerous snake-puzzles. It consists of 16 linked circles, which can be folded in several shapes. Folding angles are 45, 90, 135 etc degrees. They have various coulours on one side, and are black/grey on the reverse.

“That must be super-duper easy,” was my first thought when I saw all the unique colours. But they found a small trick to make to make it a bit interesting: in the exercises they depicted just some of the colours. Puzzle exercises with the grey/black sides are a bit more esthetically pleasant, but arent too difficult either.

It came cheap, less than 4 euro, and if you like it, here are some more exercises:

1) flower

2) Abstract figure