Time: 00:00:00

Sudoku 20x20 num: 221 (Level: hard)

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