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Practice and training in recognizing PLL algorithms on two sides of a cube.
The program allows you to learn how to quickly recognize situations at the last stage of the Friedrich (CFOP) technique on any two sides of the cube, which allows you to speed up the assembly time.
You can also train in the assembly of the cube from the very beginning, and try to assemble it using the minimum number of interceptions, which also allows you to speed up the assembly.