>> See here the introduction to the wire puzzles <<
This is another very, very interesting puzzle. When first encountering this puzzle, many utter “but, how??”, suspecting that it is impossible to separate the ring at all. When they realize by your smile that the solution really exists, people also find the solution relatively quickly, but only because there aren't many ways in which this puzzle can be solved.
However, the fun is not over when you solve the puzzle! After removing the ring and laughing triumphantly, you have the task to return it to its original place, which is also challenging enough. Not only is it challenging, but I personally always laugh at people's attempts. What’s so cool about it? You’ll see when you try it. :)
Definitely highly recommend this puzzle as another must-have.