No. IV.
It is said that there are 86 ways in which the numbers in this model magic square can be added up so that they make 34.
| 4 | 15 | 14 | 1 |
| 9 | 6 | 7 | 12 |
| 5 | 10 | 11 | 8 |
| 16 | 3 | 2 | 13 |
It is not difficult to discover more than half this number that are symmetrical, including, of course, the 4 rows, 4 columns and 2 diagonals. Here are a dozen samples, from which others can be seen—
| 4, | 1, | 16, | 13. |
| 15, | 14, | 3, | 2. |
| 14, | 12, | 5, | 3. |
| 6, | 7, | 10, | 11. |
| 15, | 8, | 9, | 2. |
| 1, | 6, | 11, | 16. |
| 14, | 8, | 9, | 3. |
| 9, | 15, | 2, | 8. |
| 4, | 5, | 12, | 13. |
| 4, | 5, | 11, | 14. |
| 4, | 9, | 8, | 13. |
| 9, | 14, | 3, | 8. |
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