Inspired by the unparalleled true genius of ancient Grecian astronomers, this puzzle challenges you to turn the dials until all 12 columns add up to 42.
There is a diabolcal mechanism secretly moves columns that you thought were already solved as you work on others! This True Genius brainteaser takes patience, persistence and a good mind for numbers. You think that modern computers are complicated -- just wait until you try working an ancient one! Perfect gift for math experts and computer geeks.