Time: 00:00:00

Sudoku 20x20 num: 263 (Level: hard)

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