Time: 00:00:00

Sudoku 20x20 num: 298 (Level: hard)

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