Printable Hard Sudoku

Set xbhq9v. 8 puzzles with an answer key, ready to print.

Hard puzzles start with about 29 givens and need real techniques: pointing pairs, naked pairs and hidden pairs. Paper is a great way to practice them, because you have to keep your own notes honest.

Each free PDF has 8 puzzles, four to a page on US Letter paper, plus an answer key with every solution. Every puzzle has exactly one solution. A new set appears here every day, or you can grab a different set any time.

Puzzles in this set

Hard #1
6 9 3 4
8 1 7 2
4 3 5
9 6 8
9 7
5 1 2
6 5
6 9 7 3
5 4 6 1
Hard #2
3 2 4 6
7 1 6 5
1
7 1 5 3
4 8
6 9 5 1 2
2 5 1
6 9 3 4 7
3
Hard #3
3 5 6 2
5 6 7 3
1 3
1 9 2 3
8 2 9 5
9 7
8 6 7
4 8 6 5 1
5
Hard #4
3
9 3 8 5 1
6 8 3
8 9 2
6 4 1 7
2 7 8 9
5 2 9
3 2 1 4
5 4
Hard #5
6 1 4 2
1 7
9 7 5 8 1
1 6 2 9
5 3 4
9 6 7
4 3 1
7 9
8 7 2
Hard #6
9 8 6
7 9
6 1 8
4 8 7
2 5 7 6 9 3
1 9 8 2
2
7 9 3
5 6 4 7
Hard #7
5 1 7 9
4 9 3 2
7 6 5 4
9 1
5 8 2
2 6 3
5 7 9
2 4 3 6 1
8
Hard #8
1 4
4 7 8 3 2
6 2 5
6 2 5 8
6 7 9
5 8 4 7 2
5 7 9 4
2 3
4

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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