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Divide and align these fallen pillars to solve the mystery of Atlantis.

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A puzzle that is tricky to master but thoroughly enjoyable, Carta Blanca utilises a sliding door that is more than it seems!

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The Barrel is the most difficult puzzle in this series

The Chest is a challenging packing problem where symmetry and basic architectural techniques are only some of the skills required to find success

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Four wooden boards are enclosed along with instructions on how to construct Oswald the Owl. Can you follow the instructions are build your very own twisty necked bird of prey?! The owl is much more difficult to construct than the other animals.

The most difficult of the four disentanglement puzzles

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This compendium contains all 5 Professor Puzzle nail puzzles.

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We feel that the Menace can possibly be described as the greatest metal puzzle ever invented. It holds that very thing that humans hate most about non living objects – it is almost certainly cleverer than they are. If you have no patience, don’t buy it. If you have a very small brain, don’t buy it either. And if you fancy yourself as a bit of a problem solver, you may have met your match.

Separating these three identical pieces is just the beginning. The greatest challenge lies in understanding how to reassemble them correctly again. The solution is unique in the puzzling world, requiring three moves cunning enough to outwit the slyest fox.

We feel that the Menace Puzzle can possibly be described as the greatest metal puzzle ever invented. It holds that very thing that humans hate most about non living objects – it is almost certainly cleverer than they are. If you have no patience, don’t buy it. If you have a very small brain, don’t buy the Menace metal Puzzle. And if you fancy yourself as a bit of a problem solver, you may have met your match. The genius of this Menace Puzzle is the fact that a toddler could reconnect the pieces when separated in seconds. But once connected they are seemingly impossible to separate again.

A Four puzzle version of the Set of 3. These classic wooden challenges are idea for those unfamiliar with puzzles

Sadly not as easy as ABC. Accessible, yet tricky and similar to The Hive. The handle must be removed.

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We think the best puzzles are not those that will drive people crazy, but those with a simple solution that are staggeringly difficult to find. For that reason, this one of our top recommendations at puzzlguru.com.

The secret here is finding a way to manoeuvre the ring free from the 'U' shaped piece of wire. Perhaps the simplest of the three puzzles in principle, but a simple solution is not always the easiest to find. The uninitiated should expect to be in for the long haul with this little biter.

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The Molecule is a less complicated shape than The Particle or The Cell, and for the majority of puzzlers, this is a welcome relief. But do not be fooled by it's less complicated appearance. Unless you are related to a beaver, moving these logs into the correct position will test your puzzling powers to the limit! Patience and a sharp mind are vital to have any chance of overcoming this brain baffler.

Putting the first few bamboo bars in the correct position is the most difficult part of this challenge. Manage this, and the rest will follow...