Pretty hard I guess.... if you've never seen it done. As soon as I read your post, I took mine apart, and had my GF try to put it back together.... Epic Fail
How odd. Everyone I have tried that with over the years always says the same thing... "It only fits together one way, and it completely intuitive"
Ill be curious to see if they go to the prison this season or not, or if they are basically going to write off the books and make it up as they go again.