We know this brainy puzzle will get your gears turning!

Whether you're killing time before a meeting or on your um-teenth hour of a family road trip, this puzzle is a mind-bending way to pass the time.

This challenging game of logic is an ever-changing blend of brainteaser and tactile motion. Rotate the eight meshing gears to align all six sides, then take the difficulty up a notch by pulling the core apart