Time: 00:00:00

Sudoku 25x25 num: 475 (Level: hard)

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