Time: 00:00:00

Sudoku 20x20 num: 212 (Level: hard)

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