Wow! "The most difficult puzzle ever" is truly just that for me! I decoded the 10 clues very easily, and when I registered online (in USA), the clue it e-mailed me was half of one of the clues I had already decoded... I keep reading in this forum to keep reading the clues, that it's all there.
So I'm looking for different meanings now... For instance, in clue 5, to see if I've got the 3rd ball bearing released, I'm starting to think now that I should stand on my head and spin! I have better luck figuring out where the free ISIS's are than figuring out how to open the one I've got!
By the way, I tried the phone book thing to no apparent avail; everything looks, feels, and sounds just like it did when I first opened it. Maybe I'm not trying hard enough?