{"product_id":"true-genius-grecian-computer-wooden-math-puzzle","title":"True Genius Grecian Computer Wooden Math Puzzle","description":"A dial-turning math brainteaser puzzle inspired by the astronomical computers of ancient Greece — rotate the layered dials until all 12 columns add up to 42. One of the hardest and best-selling puzzles in the True Genius collection.\n\nThe rules take five seconds; the solve can take weeks. Stacked rotating dials create thousands of possible alignments, and only the right combination makes every column total 42 — a challenge worthy of the Grecian astronomers who inspired it. The flat, medallion-like design looks like an artifact on a desk, which is exactly where it tends to live between attempts.\n\nWhy retailers stock it:\n\nA proven best seller with a devoted following — customers come in asking for it by name\nEasy to demo, nearly impossible to put down: staff hand it to a customer and the puzzle does the selling\nOne-rule elegance appeals to math lovers, engineers, and gift buyers alike\nFits bookstores, museum shops, science stores, and gift boutiques\n\nDetails:\n\nRotating-dial math puzzle — align all 12 columns to sum to 42\nApprox. 5.9\" x 5.9\" x 1.1\"\nPart of the True Genius collection of history-inspired brainteasers","brand":"Project Genius","offers":[{"title":"Default Title","offer_id":49969681989874,"sku":"TG406","price":15.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0681\/8732\/4658\/files\/cc389debfcd1551050d9102f51466e0e224f30b8fcf705ec3812dab50bfec52e.jpg?v=1787512249","url":"https:\/\/collectibleplayingcards.com\/es\/products\/true-genius-grecian-computer-wooden-math-puzzle","provider":"Collectible Playing Cards","version":"1.0","type":"link"}