Hard sudoku — printable sheet 9
Four hard puzzles, one page. Answer key: view answers.
3
9
2
9
5
8
9
8
3
2
4
6
5
1
4
1
5
9
5
4
1
8
7
6
7
2
6
9
8
3
9
3
7
2
7
8
5
2
8
7
9
9
4
8
3
1
5
4
1
2
6
9
2
5
9
1
3
2
7
1
6
8
5
8
3
6
2
5
9
4
1
4
3
8
1
6
7
4
5
2
3
3
5
6
7
9
4
2
5
1
4
8
3
5
7
4
3
9
3
8
Sheet 9 of 20 · all hard sheets