The 5x5x5 Rubik's Cube, also known as the 12-facet Rubik's Cube, was invented by German puzzle designer and inventor Uwe Meffert. It is a regular 12-facet solid with each face being a pentagon, with a total of 50 movable parts. The invention and production rights of the 5x5x5 Rubik's Cube ultimately belong to Uwe Meffert. Each face of the 5x5x5 Rubik's Cube has a central piece, five corner pieces, and five edge pieces, totaling 12 central pieces, 20 corner pieces, and 30 edge pieces. Each central piece has a single color, edge pieces have two colors, and corner pieces have three colors. The solution principle of the 5x5x5 Rubik's Cube is similar to that of the regular Rubik's Cube, with the alignment of the central area and the alignment of the edge piece groups, eventually reducing to a 3x3x3 Rubik's Cube, and then following the solution method of the 3x3x3 Rubik's Cube to solve it. The solution process of the 5x5x5 Rubik's Cube includes the alignment of the five edge pieces on the bottom layer (bottom pentagon alignment), the restoration of the corner pieces on the bottom layer, the restoration of the edge pieces on the second layer, the corner pieces on the third layer, the edge pieces on the fourth layer, the corner pieces on the fifth layer, the restoration of the edge pieces on the sixth layer, and finally the restoration of the five edge pieces and five corner pieces on the top layer.