Lanlan geary cube 3x3 by Oskar Vand Deventer

Designed by the prolific and famous puzzle inventor, Oskar van Deventer, the geary cube looks like a regular 3x3 cube, but the stickers hint at the hidden treasure.

Turning one face of the cube, causes to opposite face, to rotate in the opposite direction!

Hidden gears are the secret to this fantastic, challenging puzzle, that should be in any collection.