Time: 00:00:00

Sudoku 25x25 num: 498 (Level: hard)

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