Printable Hard Sudoku

Set jpy6qe. 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
2 8 3
1 3 7
6 4 8 1
9 4
2 6 7
8 3 2
6 2
4 9 3 1 5
8 5 9 4
Hard #2
5 6 3
1 7 5
7 6 8
5 9 7
1 4 5 3
8 4
1 2 6
7 5 9 1
8 6 7 2
Hard #3
3 7 8
2 4 7
9 1 4
2 9 1 7
7 3 6
1 5
4 9 8
5 2 9 6 3
3 7 4
Hard #4
1 7 8 4
2 7 5
2 9 6
2 4 5
7 4 1
9 6 5 1 8
6
7 4 6 5
8 2 9
Hard #5
6 3 9 7
6
2 4 1
7 1 9
5 1 4
2 4 9 5 7
2 6 8
8 3 5
7 9 1 6
Hard #6
4 2 1 8 6
7 4 5 9
8 5 9
2 1 8
4 7 2
9
4 5
1 5 9 3
3 7 1 8
Hard #7
9 8 1 2 4 3
3 8 9 7 2
4 6 5 1
6 3 5 9
5 7 2 6
6 9 4 1
2
7
Hard #8
9 5 4 2
6 2 5
8 1 3 6
2 1
4 3 5
3 8 7
4 6
7 3 6
6 4 8 7 2

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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