Daily Sudoku Competition for May 11
Tough
by Andrew Stuart
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
G
H
J
8
9
5
2
4
1
7
6
3
4
2
6
9
7
3
1
8
5
7
1
3
5
6
8
2
9
4
2
5
4
1
9
7
8
3
6
3
6
7
8
5
2
4
1
9
1
8
9
4
3
6
5
2
7
9
4
2
6
8
5
3
7
1
5
3
1
7
2
9
6
4
8
6
7
8
3
1
4
9
5
2