Time: 00:00:00

Sudoku 20x20 num: 244 (Level: hard)

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