Nearly two thousand years before the first electronic computer, ancient Greek astronomers built the Antikythera mechanism — a device of interlocking dials so sophisticated that historians spent decades trying to understand it. The Grecian Computer is a hands-on homage to that ingenuity: a wooden dial puzzle where the goal is deceptively simple to state and remarkably difficult to achieve.
Twelve Dials, One Number
Turn the dials until every one of the twelve columns adds up to exactly 42. That’s the entire premise — and it’s exactly why this is rated 5 out of 5, the toughest difficulty in the collection. Every adjustment ripples across multiple columns at once, so getting one column to balance often means unbalancing three others. It’s less a puzzle you solve in a sitting and more one you return to, chip away at, and slowly develop an intuition for.
Built for the Long Game
This isn’t a puzzle for the easily discouraged, and Rational Supply Co. isn’t pretending otherwise: it’s the kind of challenge people keep on a desk for weeks, working the dials during a phone call or between tasks. If the mechanism does get the better of you, a free online solution video is included so persistence pays off eventually, even if patience runs out first.
Details at a Glance
- Difficulty: 5/5 — the most challenging puzzle in the lineup
- Recommended Age: 14+
- Puzzle Type: Mathematical dial puzzle (1 player)
- Material: Wood
- Includes: Wooden dial puzzle and free online solution video
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