In Honor Of Antikythera

Beyond Rubik's cube, this complex wooden puzzle is inspired by the Antikythera Mechanism, a mysterious astronomical device discovered off the coast of the eponymous Greek island in 1901 and sometimes called the first analog computer. The puzzle has (5) concentric rings with an increasing number of tabs with numbers printed them. The object is to have the resulting (12) columns all add up to 42. Difficulty level is five stars, unless you don't care what the columns of numbers add up to, in which case it's quite easy. Also, really pretty. Ages 14+.