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200+ years of history say this is a great puzzle. Your assignment, should you decide to accept it, is to separate the lanyard and spheres from the leather strap.
Easy to understand: all four colors showing on all sides of the stack. A reverse Rubick's! You think you've got it solved... but then, oops...AARGH!
This clever little metal sculpture is a modern version of a mathematical puzzle described by Martin Gardner in 1972. We don't know why someone hasn't put it on the market long before now. Maybe they couldn't figure out how to manufacture it. We could and we did.
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