Printable Hard Sudoku

Set yz3jd7. 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 5 8
1 9 5
7 2 6 9
1 4 2
8
2 1 3
2 5 7 6
8 3 9
6 4 1 7 9
Hard #2
7 9
8 1 5
6 4 5 7
9 1
7 3 4
6 8
3 6 7
1 7 8 6
5 7 6 3 4 1
Hard #3
3 2
7 5 6
8 9 3
4 2 1 8
8 9 5
2 7
2 7 1 9
1 9 6 2
5 2 4 6
Hard #4
8 9 5 4
1
3 4 2
7 5 3 2
8 1 7
5 1 3 8
4 6 9
2 4 1
3 8 7 9
Hard #5
9 1 5
7 4
2 6 9
1 2 4 3
3 6 8 4
9 7 6
2 5
9 8 3 7
5 4 1 6
Hard #6
8 7 4 9
1 3
9 2 4 5
3 7
2 5 4 3 8
3 1 5
4
2 5 9 6 3
9 7 2
Hard #7
9
6 3
4 3 6 7
7 4 3
9 3 6 8
5 6 8 7 1
6 7 9 1 4
8 5
4 2 3
Hard #8
8 6 9
3 9 5
9 5 2 4
2 8 3
1 6 4 2
5 3
3 4 7 1
9 3 7 4
4 6

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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