Time: 00:00:00

Sudoku 20x20 num: 268 (Level: hard)

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