Printable Hard Sudoku

Set n5bgqh. 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
1 4 3
2 5 1
8 7 3 6 5
8
9 4 7
7 9 8 6 3 5
6 2 9
2 5 4
7 2
Hard #2
9 7 6 3
5 3 1 8 4
8 9 5 6
5 8 1
2
2 3 7 5
7 6 9
8 2
9 3 1
Hard #3
5 1 2
7 2 6
3 6 2
2 7 8 5
9 8 3
3 2 5 9
2 9 7
6 3 1
8 4 7
Hard #4
5 6 1
9 7 5 3
1 8 2
4
3 9 4 5
7 1 6
8 4 9
4 9 7 6 3
9 8 5
Hard #5
8 4 1 3
9 5 2
1 7 6
5 2 6 9 7
1
6 2 5 8 3
3 7 1
7
7 4 5 8
Hard #6
4 2 3
7 1 8 4 9
5 3 1 7
3 6 2 9
2 4
8 7
2 6 5
1 6 4 3
3 5
Hard #7
9 4 5 2 8 7
1 3 7 8
1 4
4
8 9 6
6 2 3
4 1 3 7
2 9 5
2 3 6
Hard #8
2 6 3 9
4 1 7
4 9 2
6 7
2 1 6 9 3
5 7
3 6 4 5
8
4 5 8 2 1

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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