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 |
Puzzle yourself using the EXCEL download below.
For each magic square of odd order, you can construct a concentric magic square with diamond. See on this website:
3x3, 5x5, 7x7, 9x9, 11x11, 13x13, 15x15, 17x17, 19x19, 21x21, 23x23, 25x25, 27x27, 29x29 and 31x31
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.