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