Printable Hard Sudoku

Set bhfxq9. 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
5 4 7 6 3
9 7
9 8
5 3 6 1
6 1 9 4
9 5
4 6 2
7 3 9 2
1 4 3
Hard #2
2 5
5 6 2 4
3 8 4
4
5 3 1 8
7 2
9 3 1 2
6 3 1
1 2 8 9 4 6
Hard #3
9 3 1
5 2 3 7
4 2 3
4 1 2 3
7 1 5
1 6 4
6 1 8
8 4
2 3 9 7
Hard #4
6 8 9
7 2 3
8 4
3 5 1
4 8
4 1 6 5 9
5 1 8 9 6
9 6 7 3 1
2
Hard #5
9 2 1
6 3 4
7 8 4
9 5
2 8
9 8 5 4 2 7
1 7 3 9
4
3 4 6 2 5
Hard #6
3 5 9 7
6
8 3 9
3 6 2 4 8
2 5 4 3 7
4 6 5
6 3 2
4 7 5
8 7
Hard #7
7 5 1
5 6
6 1 2
9 2 1
5 4 7
3 8 5 4
2 5 1 9 6
5 3 9 2 4 8
Hard #8
9 6 2 8
5 3 1
4 2 9
7 9 8 2
1 6 4
2 3
7 3 9
6 4 7 2
3 1 8

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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