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Product Information

ObjectOpen the Lock
DifficultyLevel 8 - Demanding
BrandJean Claude Constantin
TypesEuropean Wood Puzzles, Jean Claude Constantin
Dimensions3.94 in x 3.94 in x 1 in / 10 cm x 10 cm x 2.5 cm

Product Description

A variation of the Smiley Lock, also by Jean-Claude Constantin. The knobs on the front can rotate, but nothing else initially happens. The objective is to open the happy lock. Can you uncover the secret combination to open this clever lock puzzle? Made of laser cut wood, anodized metal and acrylic, the solution is obtained by spinning the five knobs to the correct position. A novel design by Jean Claude Constantin.


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1 Reviews

Disclaimer: These reviews are written by our customers. Puzzle Master makes every attempt to keep these posts informative and relevant. If you find a post objectionable or inappropriate, please let us know by sending an email to [email protected]

    On Sunday June 29th Andrew Parr wrote,
I have other puzzles by this inventor, but the Smilock does not live up to expectation. The design allows the solver to take the puzzle apart and examine how it works. And that's exactly what I did after getting nowhere. Seeing the inside of the puzzle confirmed what I suspected: The dials have to be aligned *precisely* in the correct orientation with very unforgiving tolerances. I haven't bothered to work out what the odds are of getting the five dials in correct positions by chance. But even if you could pass that stage, the lock itself rotates open and rubs against the dials, pushing them out of position. The materials used for the lock and dials (both are wood) bind when moved. If the dial was plastic, perhaps this puzzle would work as intended. Save your money, don't get this puzzle.