Time: 00:00:00

Sudoku 20x20 num: 213 (Level: hard)

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