Today I’m going to talk about a puzzle that in my opinion is very difficult. It is rated a 10 out of 10 in difficulty. This puzzle is called the Cast Quartet and is designed by Mineyuki Uyematsu. He entered this puzzle in the 27th International Puzzle Party competition. The objective of this puzzle is to take the four pieces apart and then put them back together. The black metal finish looks cool and the puzzle has a solid construction. This puzzle chewed me up and spit me out. This puzzle is very hard. I know this puzzle is solvable but I just can’t twist and turn it the way I would like it to go. This is truly a challenge that will test even the hardcore puzzler. I received this puzzle from Puzzle Master and you can find the solution here.