Time: 00:00:00

Sudoku 20x20 num: 262 (Level: hard)

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