Huzzle Cast Cyclone - Difficulty level 5

Cast Cyclone is a puzzle in which each piece interlocks with the other three. While all the pieces initially look the same, there are in fact two different kinds of pieces. The design of each ring has been carefully calculated, highly restricting the amount of possible movement and creating an extremely puzzling puzzle — the pinnacle of a long line of challenging puzzles created by a master puzzler.
Designed by Hong Kong designer Kyoo Wong.