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Rubix Cube quest for speedy solution comes to an end


A 30-year quest to find the fewest number of moves needed to solve any one of the billions of configurations for a three layers magic cube may have ended. Any scrambled magic puzzle cube can be solved in 20 moves or fewer, researchers claim. The international team used a bank of computers at google to help crank through the solutions. The figure is known as "God's number" because an all-knowing entity would know the optimal number of steps needed to solve the cube puzzle. "We now know for certain that the magic number is 20," Professor Morley Davidson, a mathematician from Kent State University, told us.

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