Time: 00:00:00

Sudoku 20x20 num: 254 (Level: hard)

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