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