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Brainteasers: Rubik's Cube
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Even if you've been living on Mars since the 1970s, you've probably heard of Rubik's Cube, the bestselling puzzle
in history. Just in case, though, here's a recap: it's a 3-by-3-by-3-inch cube with rotating faces made up of nine
squares that can be scrambled into (so it's said) 43 quintillion combinations. Getting the cube back to its original
position (so that all nine squares of the same color make up each face) is incredibly challenging for most, though
it can be mastered and solved. Whether it's a difficult toy or retro '80s kitsch you're seeking, Rubik's Cube is for you.
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