MathDB
Magical squares (flanders '98)

Source:

August 9, 2004
linear algebramatrixgeometrygeometric transformationrotation

Problem Statement

a magical 3×33\times3 square is a 3×33\times3 matrix containing all number from 1 to 9, and of which the sum of every row, every column, every diagonal, are all equal. Determine all magical 3×33\times3 square