Hanayama Cast Puzzle: U & U-Level 4

Hanayama Cast Puzzle: U & U-Level 4
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Availability: In stock available to ship within 24 hours.
SKU: 100024702
Part #: 30828
UPC: 023332308286
MFG: Hanayama
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Hanayama Puzzle - U & U (Level 4)

Put your problem-solving skills to the test when you try to get these two identical interlocking metal pieces apart and back together again. This difficulty level 4 brain teaser by Hanayama will have you scratching your head. The object is to separate the two pieces. The second puzzle is to re-assemble the two pieces back together.

Puzzle measures 4.8”x3”x1.8”. This is a really fascinating disentanglement brainteaser. Recommended for ages 13 to 105 years.

NO force is used to solve. Forcing pieces may damage the puzzle! Rated by the manufacturer as a level 4 difficulty (on a scale of 1 to 6 where 6 is the most challenging.) Difficulty level shown on the packaging. Your own experience could vary substantially.

Hashtag is part of a series of 60 plus very interesting and mentally provocative metal brain teasers from the Hanayama Puzzle Company. Some serious puzzlers refer to these as "disentanglement-style puzzles" as they involve taking something apart and then re-assembling. Re-assembly can also be a puzzle and may be equally as tricky.Reminder. NO FORCE is ever required to solve the puzzle. Just a series of clever moves.


  • Hanayama produces excellent quality puzzles. You'll love the tactile experience, and the manufacturing quality is very high
  • Way cooler than a fidget spinner
  • Each Hanayama Brain Teaser Puzzle is thoroughly rated by Mensa for levels 1 through 6 in difficulty. This puzzle is Level 2
  • Elegant collectible that looks great on a shelf or desk
  • Collect them all!
  • Ages 12 and up
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