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Cubes in solid geometry become squares.
The cube of solid geometry becomes a square with the following contents:

1. First, select a face to build a cross, and then align the colors of the center blocks of the four sides with the adjacent colors of the cross.

2. Put the bottom layer back to its original position in the way of top left and bottom right. If the place is right, the side layer has been put together.

3. Then align the center block with the assembly layer and assemble the middle layer at the edge according to the formula.

4. Cross the top floor, but be careful not to disturb the previously spelled parts, and then spell the top floor according to the formula.

5. Align the color in the middle of the third layer on the side with the color of the center block, and put the third layer Rubik's cube together according to the formula to complete the reduction.

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.

The Rubik's cube in the usual sense refers to the third-order Rubik's cube in the narrow sense. The third-order Rubik's cube is usually a cube, made of elastic hard plastic. The conventional racing game is to disrupt the Rubik's cube and then restore it in the shortest time. The generalized Rubik's cube refers to all kinds of geometric bodies that can be disturbed and restored by rotation.

Rubik's cube, Huarong Road and French single aristocrat (independent diamond chess) are also called the three wonders of the intellectual game world.