Oh yeah this week I have a cool puzzle!!! It is the Cast Donuts puzzle and it was designed by a guy in Finland named Vesa Timonen. The puzzle is made of four pieces that form two rings and the rings are intertwined. I really like the look and feel of this puzzle. In fact, I find myself putting the puzzle in my pocket a lot. This is because I like the smooth feel of the puzzle. Solving this puzzle isn’t very difficult but the puzzle mechanics is very cool. I had to solve the puzzle a few times to understand the solution method. Once the mechanism is understood, it can be solved in a few seconds. This is my favorite cast puzzle (at the moment) and that is saying a lot because most of my cast puzzles are exceptional. This puzzle kicks ass and I highly recommend it. I received this puzzle from PuzzleMaster and you can find the solution here.