Hexagonal tortoise problem, in which all the sums of six numbers of each hexagon are the same number 93, has apparent similarities to a magic square, which  typically deals with its construction, classification, and enumeration.
Hexagonal tortoise problem, in which all the sums of six numbers of each hexagon are the same number 93, has apparent similarities to a magic square, which  typically deals with its construction, classification, and enumeration.