Time: 00:00:00

Sudoku 25x25 num: 525 (Level: hard)

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