### 5x5 concentric magic square with diamond

A concentric magic square is nice. A concentric magic square with diamond is even better; see i.e. the 15x15 Al Antaakii concentric magic square with diamond. In the diamond are alle odd numbers (and outside the diamond are the even numbers).

How to construct a concentric magic square with diamond? Puzzle in EXCEL and see the result below:

5x5 concentric with diamond

 24 8 3 16 14 6 19 5 15 20 1 9 13 17 25 22 11 21 7 4 12 18 23 10 2

Al Antaakii 5x5.xls

For each magic square of odd order, you can construct a concentric magic square with diamond. See on this website:

See on the website of Jos Luyendijk that it is possible to get a concentric magic square with diamond with an extra magic feature.

 2 8 17 22 16 14 3 21 15 12 19 25 13 1 7 20 11 5 23 6 10 18 9 4 24

There is not only a 3x3 magic square in the middle, but also in the yellow marked cells you find a 3x3 magic square.

Jos Luyendijk has created concentric magic squares with the special diamond inlay from 5x5 up to 15x15.