Printable Hard Sudoku

Set 1wevm9q. 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
9 5
4 5 2 7
3 7 1 6
1 6 4 5
8 3 6
3 2
9 5 8 4
7 4 9 6
1 2
Hard #2
5 2 9
7 4 5 2
3 1 7
6 9 2
4 5 7
9 8
2 3
4 1 5 6
5 6 1 7 4
Hard #3
7 4 1 8 2
6
9 4 3
5 3 1 4 9
1 9
7 2 1
1 5
6 2 5 1 4 3
8 6
Hard #4
5 8 3
2 3 5 7
7 9 4 6
8 9 1
7 5 9 6
1 7
3 2 1 4
4 7 5 6
8
Hard #5
8 5 4
4 8 5 2 3
7 9
5 4
5 6 7 9
3 4 1 7
8 4
1 5 6
9 7 2 1
Hard #6
2 3 9
2 9 5 7
6
1
9 3 5 6 8
6 7 5
6 3 9 8 7
8 2
1 4 7 9 3
Hard #7
7 9
2 4 5 3
5 1 6
1 3 2
2 3 8
7 8
6 1 9
7 9 4 8
4 2 8 5 7
Hard #8
8 6 7
9 1 2
9 3 2
1 4 5 8 9 3
3 6
5 9 2
2 6 7 5
8 1 4
8 5

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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