Time: 00:00:00

Sudoku 20x20 num: 261 (Level: hard)

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