•Move a small ball of any color to the upper vacant position, and then keep it still. After disturbing the color positions of other balls, restore them.
•Turn the module to move and replace beads of different colors. Module 1.2 can be linked. You can also press the middle axis with your fingers, and the module 1.2.3 will be linked together. Module 3 can be rotated independently. Module 3.4.5 can be linked. Module 4.5 can be linked.
•Practice and find out the rules of Rubik's Cube reduction. Through memory and spatial imagination, put the beads in the 6 vertical grooves at the fastest speed. The color is uniform.