How to Solve Rubik's Revenge
The Rubik's Cube was invented by Ern' Rubik in Hungary in 1974 and released by Ideal Toy Corporation in 1980. The cube became a worldwide success, with more than 300 million in sales in the past 30 years. A more challenging variation known as Rubik's Revenge features 16 cube faces on each side instead of the traditional nine. The key to solving Rubik's Revenge is to group the color pieces in a manner that essentially turns the 4x4x4 cube into a standard 3x3x3 cube.
Instructions
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Solve the centers by moving the pieces around so that all four of the middle pieces on each side are the same color. Solving the centers first will give you the six distinct sides-the red side, blue side, etc.-you need to continue solving the cube. Once this is accomplished you can treat the four middle pieces as one piece.
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Verify the center colors line up properly. Ensure your green center is on the opposite side of the cube from the blue center. Red should be opposite orange and yellow should be opposite white. If your center colors are not properly aligned, readjust them so they are correct.
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3
Manipulate the cube pieces so that each edge piece is partnered with another edge piece of the same color. When looking at one side of the cube, the edge pieces are the two middle pieces in the top row, the two middle pieces in the bottom row, the two middle pieces in the left column and the two middle pieces in the right column. From here, the process of solving the cube is the same as the usual process of solving a 3x3x3 cube.
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Finish solving the Rubik's Revenge as you would normally solve a 3x3x3 Rubik's Cube. Regular Rubik's players will be familiar with this technique. Beginners can find the precise list of steps on the official Rubik's website. If you finish with one solid color on each side, you've solved the Rubik's Revenge correctly.
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Tips & Warnings
Because of the complexity of the 4x4x4 cube, there is a chance that solving the Rubik's Revenge like a 3x3x3 cube could leave either two edges or two corners out of place. This is a common occurrence known as a parity error. If you encounter this, you will need to locate an online tutorial or check the Rubik's forum for precise instructions for your specific situation.