The object of the puzzle is of course to remove the nut from the bolt. It is a tricky puzzle. Initially when I first started playing with the puzzle, I could not even move the nut a bit. It was screwed tight to the point where I really thought the parts were jammed. I did not expect that the nut could be unscrewed in the normal fashion (afterall, it can't possibly be so easy right?, given that it has a difficulty level of around 7). But I did the obvious anyway, trying to unscrew it, in both directions. Nevertheless the nut refused to budge.
I tried some of the tested methods like as tapping, banging and shaking, thinking that these may help and lo and behold, after knocking the bolt a couple of times on my puzzle table, the nut moved ever so slightly and here is where I suddenly discovered the solution to removing the nut. Once I had separated the nut from the bolt, I realised that the way the nut is kept in place is actually quite simple but clever. TIP: no force is needed to solve this puzzle.
Overall a nice tricky little bolt puzzle and as stated by Mr Puzzle Australia, it is "hard but not extreme".....I agree. If you are into bolt and nut puzzles, well worth acquiring since it is also good value for money.