Printable Hard Sudoku

Set 1veq8t3. 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 3 2 7
7 1 6
1 5 9
7 5 6 8 3
3 2
5 8 1 2
9 5 3
2 6 4 8 9
Hard #2
2 5 9 3
9 4 8 1
4 3 8
2 7
8 4 6 2
4 2 1 9
3 4
6 9 5
3 4 1
Hard #3
5 4 2 8
4 6
7 3 5 9
6 3 8 5 7
1 9 5
1 2 3
1 6 5
8 5 3
9 4
Hard #4
8 1
7 5 2 1
2 9 6
9 7 6 2
7 1 3
5 6
8 7 5
3 2 7
9 4 6 3 8
Hard #5
2 3 4
5 7 3 8
2 1
4 6
1 3 4 9
2 6 8 4 7
7 8
1 8 2 6 3
6 1
Hard #6
6 5
7
2 9 1 4 6
1 8 3 9
7 4 1 9
6 5 1
9 2 5
3 6 7
4 7 6 2
Hard #7
6 5 4
2 4 8 9
5 4 1
4 7 8
6 8 3
9 2
5
6 1 7 2
7 1 8 9 2 6
Hard #8
1 3 7
8
9 1 5
8 3 5
4 7 1 9
1 8 6
5 1 4 6 2
4 6 2 9 3 1
7

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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