We’ve all seen videos of Rubik’s cube champions who can solve the puzzle in less than 5 seconds. And there are cube-twisting robots that can solve the cube even faster, often in under a second.

If you're shopping for someone who loves puzzles this holiday, Amazon has some great deals on an all-time classic: the Rubik's Cube. More specifically, Amazon is offering big discounts on Smart ...

The cube, of course, is the compact Rubik’s Cube, the bestselling 3D combination puzzle (a tasteful amount of memorabilia is strewn about the house) originally known as the Magic Cube, that Rubik ...