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
Please note:
- 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.
