Daily Jigsaw Sudoku for May 18
No 5210, Tough

by Andrew Stuart
1 2 3 4 5 6 7 8 9
A
B
C
D
E
F
G
H
J
5 9 2 6 3 4 7 1 8
7 3 6 8 1 9 4 5 2
9 8 1 2 5 7 3 6 4
2 6 4 1 8 5 9 3 7
3 5 7 4 9 2 6 8 1
8 4 9 3 7 6 1 2 5
1 7 3 5 6 8 2 4 9
4 1 8 7 2 3 5 9 6
6 2 5 9 4 1 8 7 3