Printable Hard Sudoku

Set g585rj. 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
1 2
9 7
7 6 3 9
6 2 7
7 6 3 5 8 4
5 3
7 5 6 9
2 1 9
8 3 2
Hard #2
9 3
8 7 2
4 5
2 6 4 7 5
1 6 2
4 2 9
2 7 4 9
7 6 8 3 1
2 7
Hard #3
7 4 1 2
4 6 3
1 8 9
5 7
1 8 5 9
6 9 3
1 6 4
5 2 8
2 8 7 3
Hard #4
3 1
9 8 1
4 8 2 6
5 6 2
7 4
2 5 4 8 3
8 3 7 2 9
1 8
6 3 1
Hard #5
2 8 9
5 1 8
3 7 6 5 4
9 6
5 6 4 2
6 4 5
1 8
5 6 9 3
1 2 6
Hard #6
2
3 8 1
2 9 8
5 4 3 9
9 7 5 1
9 1 5
6 8
3 7 5 8
5 9 8 3 7
Hard #7
1 2 3
5 8
4
1 5 2 9 7 4
9 4 3 1
6 4
9 7 2 8
7 2 5 3
4 2 7
Hard #8
4 3 7 1 5
8 2
7 6 2
6 9 3 1
5 3 8
6 4 3
7 8 4
4 3 1 6 9 7

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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