My Neighbor Totoro Gray Crystal Puzzle

Make no mistake, this is not a model kit, this is not like buying a Lego set, this is a properly hard puzzle. The first time I tried it I gave up after an hour without even managing to fit two pieces together. Of the 42 pieces, seven are accessories you add at the end, the other 35 are unique 3D translucent shapes that look very similar. It gets harder as you go, as the transparency makes it so hard to tell which level joints are on that at times you will be playing by feel alone. The nearer you get to the end the more likely it is to fall apart on you, setting you back hours, and heaven help you if you drop any on the floor, they turn invisible. All told this 42 piece set took me over 15 hours to finish, but the sense of pride when you finish is equally epic, and the result is stunning. I would suggest a minimum age of 15 for this set, maybe even 18. If requires spatial reasoning, dexterity, fine motor skills, and most of all calm and patience. I'm a pretty zen guy, and I was screaming with frustration a couple of times here. Don't buy it for somebody easily wound up unless you want to sit back and wait for them to explode. Couple of extra points to note, it says gray but it's really more of a blue. And it doesn't come with the bus stop pictured on the box, just the umbrella. Take up the challenge if you dare, and have fun!