U&U Cast Metal Puzzle – Hanayama Brain Teaser Level 3

Description

The U&U puzzle contains two U-shaped bolts and four nuts and it is quite complex to solve. There is a devious trick hidden in the puzzle. Taking a closer look at each part is the key to unlocking them. The U&U puzzle was designed by Kyoo Wong who won puzzle of the year at IPP 2014 in London, U.K.

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