THE MAGIC NINE, OR THE PUZZLE OF FIFTEEN.

To arrange the numbers 1 to 9 in three rows, so that the sum of each row added together horizontally, vertically, or diagonally shall be 15. Fig. 5 shows how the arrangement has to be made.

83027102511
356333412
171322212414
201916151823
531433632
2612928729

Fig. 6.—Magic Thirty-six.