Difficulty Level 4
The most difficult of the Professor's four nail disentanglement puzzles. Two operations are required to separate and then reattach these nails. Only suitable for the more gifted puzzler. Difficulty level 1 is the easiest, and 5 the hardest, in this range.
This challenging metal puzzle is pleasingly large and constructed to the highest standards. A great way to fill some spare time. This puzzle would make a superb gift for the person in your life who can do everything, or just as a challenge for yourself.
Size - Each nail is 15cm long
No force is required to separate the nails.
Solving the puzzle is not impossible. All puzzles can be solved.
This puzzle is hand made in England and individually tested to ensure that the mechanics of each puzzle is in perfect working order.
Suitable for ages 8 and up.
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