If you haven't noticed, good old Rubik (of Rubik's Cube fame) has
come up with another dastardly device to frustrate people the
world over. It's called "Rubik's Clock" and it's a "device" with
two faces with 9 "clocks" on each side, 4 buttons and 4 "wheels"
that you can move to move various combinations of clocks on both
sides of the device, depending on which wheel is turned and the
positions of the buttons. The object of all this is to get all
clocks on BOTH sides to point to 12 (the "clocks" are really dials
and only have 1 "hand") all at the same time. It's even harder
than it sounds.