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