Printable Hard Sudoku

Set e7sdf0. 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 8
1 7 8 9
7 6 4 5
2 3
9 8 6 7 4
3 2
9 3 5
7 1 4 9
4 5 1
Hard #2
1 2
9 8
7 5 8 1
8 4 1 2
6 7
6 9 8 5
2 9 4 5
6 7 2 1 4 8
4
Hard #3
6 9
7 5 6 8
5 9 8 2
7 3 6
4 9 5 7 3
7 9
2 3 1
8 1
4 1 3 5
Hard #4
5 7 3
6 2
8 3 9
2 9 1 5 4
1 8 5 7
7 3
9 4
6 1 4 7 3
3 6 5
Hard #5
2 7 8
9 4 6 1
7 6 9 8 5
1 6 2 4 9 8
2 6 3
1 9
9
4 5 3 8 2
Hard #6
7 6
3 7 9
9 2 6 5
4 7 9 8 6
7 1
6 5 2
7 4 6
5 8 2
8 2 4 5
Hard #7
3 1
8 1 4
9 2 7 3 1
6
7 5 9 6 2
9 5 7
6 4 7
8 7 5
1 9 6 3
Hard #8
1 7 4
5 9 6 2 3 1
4 3 9
5
5 6
9 3 1 7
7 6 2 8 3 9
1 7
9 8

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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