Time: 00:00:00

Sudoku 20x20 num: 220 (Level: hard)

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