Time: 00:00:00

Sudoku 20x20 num: 206 (Level: hard)

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