Printable Hard Sudoku

Set qxrv8y. 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 7
3 4 2 9
3
4 9 2 3 6
6 5 2
8 3 7
4 3 6 9 1
5 2 3
6 4
Hard #2
6 9
1 4 8 6
9 5 4 6 1
3 8 1
1 5 2
2 8 5
9 1
1 7 3
8 5 9 6
Hard #3
4 3 5
9 6 4
1 2 9 8
6 7 4 3
8 9 1
6 9
4 2 6
5 8 3 4
7 1 2
Hard #4
4 8
7 5 4 9
6 2
2 7 5 1 9 6
8
5 3 6 9 8
2 8 7
6 2
9 7 2 5
Hard #5
9 8
1 2 3 6
2 4 1
4 1 7 6 3
5 8
4 3
7 6
8 5
3 7 1 2 8 9 6
Hard #6
8 3 5 4
5 9
6 2
9 4 8 5
8 1 3 2 4
1
6 4 3 7
5 2 4 1
5 1 8
Hard #7
5 9
8 7
7 2 3 5 6
4 8 2
2 1 4 7
3 7 1
5 4 9
1 7 5 2
1 3 6
Hard #8
6 1 8
7 8 6 9
7 1
3 7 6 9
9 2 5
8 5 3 6
5 7 3
8 2 5
4 9 8

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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