There are many different ways of arranging the numbers, and either the 2
or the 3 may be omitted from the "T" enclosure. The arrangement that I
give is a "nasik" square. Out of the total of 28,800 nasik squares of
the fifth order this is the only one (with its one reflection) that
fulfils the "T" condition. This puzzle was suggested to me by Dr. C.
Planck.
[Illustration: THE MANDARIN'S "T" PUZZLE.
+-----+-----+-----+-----+-----+
| | | | | |
| 19 | 23 | 11 | 5 | 7 |
|_____|_____|_____|_____|_____|
| | | | | |
| 1 | 10 | 17 | 24 | 13 |
|_____|_____|_____|_____|_____|
| | | | | |
| 22 | 14 | 3 | 6 | 20 |
|_____|_____|_____|_____|_____|
| | | | | |
| 8 | 16 | 25 | 12 | 4 |
|_____|_____|_____|_____|_____|
| | | | | |
| 15 | 2 | 9 | 18 | 21 |
| | | | | |
+-----+-----+-----+-----+-----+