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When this cube is built
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4) Align the wheels such that exactly 4 four-letter words appear at the same time
Measures about 7" x 7" in the frame
or prevent dementia
Safecracker 50 Wooden Math Brain Teaser | Difficult Puzzle for Adults air force gifts When this cube is builtSafecracker 50 is a handcrafted wooden math brain teaser designed and built by Dave Janelle and the family workshop crew in Hudson, Florida. Five rotating rings (one base ring plus four top rings), laser cut from maple and cherry hardwoods, with deeply laser engraved numbers. The goal is to align the rings so each of 16 vertical columns sums to 50. There are exactly 1,048,576 ways to align the rings (over a million). Only one is correct. Palm sized at
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