▸3x3 magic square with magic constant 15
- Every row, every column, and both main diagonals sum to 15.
- The grid uses each integer from 1 to 9 exactly once.
- Construction uses the Siamese (De La Loubere) method, chosen automatically for order 3.
- For odd orders, the center cell always holds the median value: 5.
- The 3x3 magic square is unique up to rotation and reflection: there is only one fundamental solution.
Next stepTo check your own square by hand, add the entries in each row, each column, and both long diagonals. All 2n+2 sums must equal M.