Printable Hard Sudoku

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

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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