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12 Hardwood pieces with at least 4 different woods make up the set. New - now comes with cover.
Comes unsolved. Your goal is to fit all the pcs into the large opening
Extraordinarily difficult, yet it doesn't appear so at first
Made in Hudson, Florida by Creative Crafthouse
Originally designed by Theodore Edison, son of inventor Thomas, in 1933
Creative Crafthouse Calibron 12 Brain Teaser Very Difficult Wood Puzzle 12 Pieces