Separate the pieces of this attractive ring, then bring then back to the start!

"This puzzle is based on a classic puzzle known simply as the 'Puzzle Ring.'
Popular in 15th century Europe, these rings were actually used as official engagement and marriage rings; Christian reformist, Martin Luther, was even known to wear one.
It was also rumored to prove as evidence of its wearer's infidelity…when it came apart into pieces.
This amazing puzzle sure has quite a history..."

-NOB, Cast designer