Semiperfect magic cube
In mathematics, a semiperfect magic cube is a magic cube that is not a perfect [magic cube], i.e., a magic cube for which the cross section diagonals do not necessarily sum up to the cube's magic constant.
In mathematics, a semiperfect magic cube is a magic cube that is not a perfect [magic cube], i.e., a magic cube for which the cross section diagonals do not necessarily sum up to the cube's magic constant.