The Rubik's cube has been disturbed. How to recover?

The steps to restore the Rubik's Cube are as follows:

1, any color, directly restore one side.

2. With the repaired complete surface as the bottom, repair the trapezoid formed by the bottom of four sides and the central block, and keep the complete surface intact in the first step.

3. Take the complete surface completed in the first step as the bottom surface, the surface facing you as the "front surface", and all the lower two layers of the four surfaces are restored. (The formula is: minus left, minus left, plus left, plus left, plus left, plus left, plus left, plus left, plus left, plus left, plus left, plus left, minus left. Add, add, subtract, subtract, subtract, subtract, add, add, add. )

4. Restore the top cross. The formula is: add before, add right, add up, subtract right, subtract up, subtract before.

5. Find the only one of the four faces that can be aligned, and take this face as the front face, and none of the other faces can. Add right, add, subtract right, add, add right, add 180, subtract right.

6. The squares on both sides of the four-sided top floor are in place, which means that the squares on the two corners of the four-sided top floor are in place. Regression does not mean that the colors should be aligned, as long as the color of this block corresponds to the colors of three sides.

7. Use the formula: right subtraction, bottom subtraction, right addition, bottom addition, right subtraction, left subtraction, right addition and bottom addition. (Repeatedly use this formula, each pair of the last corner is "added" once, and then complete the next corner. )

The Rubik's Cube, also called Rubik's Cube, was originally a mechanical educational toy invented by Professor Ern Rubik of Budapest Institute of Architecture in 1974. There are many ways to play Rubik's Cube, such as racing, blind twisting and single twisting. And the popularity will not drop for a long time. Every year, large and small competitions are held, which is one of the most popular intellectual games.