Each of the letters represent a different integer 0 TO 9 and each row and each column represent a nine digit prime number (18 in all).
C D A E I H D I C
B C C C A C D B F
B G H G D A H J D
F G E C B C A D A
I A D B J F E F C
A G I G F C A B D
D D I G E E A D A
F E E C F E H A C
C D C F D A F D F
The letter to digit assignment in the cryptarithm is:
A B C D E F G H I J
3 6 1 7 4 9 0 8 2 5
The cryptarithm solves as:
1 7 3 4 2 8 7 2 1
6 1 1 1 3 1 7 6 9
6 0 8 0 7 3 8 5 7
9 0 4 1 6 1 3 7 3
2 3 7 6 5 9 4 9 1
3 0 2 0 9 1 3 6 7
7 7 2 0 4 4 3 7 3
9 4 4 1 9 4 8 3 1
1 7 1 9 7 3 9 7 9
Edited on August 24, 2022, 11:02 pm