US Patent 7100917 Magic cube

A magic cube includes a larger cubic block formed by a plurality of smaller cubic blocks. The larger cubic block has six larger faces each having nine smaller faces, wherein a central one of the nine smaller faces is indicated by a circular pointed marking ranged from 1 (one) to 6 (six) point, and the other ones of the nine smaller faces is indicated by an Arabic numeral ranged from 1 (one) to 48 (forty-eight). Thus, all of the Arabic numerals are arranged in an irregular manner, and all of the circular pointed markings are located at the central position of each of the six relatively larger faces.