The DianSheng Mirror 5x5 M is a unique and challenging twist on the classic 5x5 cube, featuring a mirror modification where pieces are differentiated by shape rather than color. This means solving the cube relies on spatial awareness and recognition of piece sizes rather than traditional color-matching methods. The DianSheng Mirror 5x5 M is a unique and challenging twist on the classic 5x5 cube, featuring a mirror modification where pieces are differentiated by shape rather than color. This means solving the cube relies on spatial awareness and recognition of piece sizes rather than traditional color-matching methods.