Formula? DianSheng Hexagonal Pyramid Dipyramid 3x3x3 Shape Mode Magic Cube Puzzle - White .Solve like a 3x3, because it is a 3x3 shape mod .In order to solve it you have to change many of your perspective .If you can solve a 3x3 this cube might be your new challenge .Adjustable with screw and spring mechanism .Supported by solid cross core axes,enabling to rotates fast and smoothly