Time: 00:00:00

Sudoku 20x20 num: 235 (Level: hard)

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