hard 16×16 Set 6 Grid Puzzle
A
2
C
7
D
4
0
C
F
F
D
2
C
8
3
A
5
6
B
1
0
C
A
3
E
C
D
9
0
1
B
0
C
3
1
C
2
E
3
5
6
2
2
3
C
6
D
A
5
9
B
3
C
7
5
3
2
E
5
A
6
0
4
A
F
C
A
1
B
0
F
8
C
9
D
E
C
E
D
1
A