Time: 00:00:00

Sudoku 20x20 num: 259 (Level: hard)

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