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