Printable Hard Sudoku

Set p6v3yx. 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
7 8 3
3 6 5
9 4 7 2
6 2 8
8 1 7
1 5 7
6 3 9 1 8
1 7 5
2 6
Hard #2
9
6 4 5
7 2 3 5 9
7 8 6
6 7 4 2 5
8 6 9 3
8 4 1
3 7
5 8 4
Hard #3
3 6 1 9
9 3 2 7
5 7
3 1 2
5 8 4 3 1
7 5 8 6
5 8 4
6 5 7 8
Hard #4
6 9 5
6 3 2
7 3
7 4 9 8
8 4
5 1 2 6
2 3 4 5
6 3 8 4
5 8 6
Hard #5
4 1 5
3 2
4 9 2 6
6 7 2
8 5 9 6
4 9 8 1
6 2 3 9 7
8
5 8 6
Hard #6
3 1
3 1 5 9
7 4 3
3 7 9 8 4 5 6
6 9
8 4 2 1
5 8 1
5 2
9 4
Hard #7
8
2 9 1 8
5
7 9 1 4
5 6 4 3 2
6 1
3 8 9 2
2 7 3 9 6
6 8 3
Hard #8
3 9 5
2 7 8 3
4 6 8 7
8 2 5 6
5 1 2
7 3 8 6
6 4 9
8 2 6 4

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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