Time: 00:00:00

Sudoku 20x20 num: 237 (Level: hard)

7
B
J
C
D
A
F
8
I
G
4
9
B
C
2
K
I
9
E
A
F
E
I
9
5
H
D
7
3
J
5
C
E
8
D
B
8
G
A
F
6
A
F
8
I
9
4
B
K
D
8
G
I
9
4
K
5
1
3
5
H
D
G
J
B
1
2
3
G
8
6
D
9
2
J
K
B
A
E
I
C
D
J
1
3
5
2
1
A
D
C
8
9
I
5
A
H
1
6
E
F
4
3
J
5
B
4
G
I
6
8
7
F
E
5
9
6
A
E
D
3
I
F
C
K
7
H
8
H
1
J
2
I
3
9
6
H
G
E
D