medium 9×9 Set 7 Grid Puzzle
5
7
6
3
4
1
8
5
4
2
3
1
7
6
2
1
8
4
3
2
4
1
7
8
6
2
1
3
8
7
6
2
6
1
5
3
4
6
8
5
3
4
8
2
1
3