Printable Hard Sudoku

Set 96eqv1. 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 3 9 8
5 4 3
4
2 7 9 1
3 5 1 2 6
1 7
9 8 2 5
5 4 1
8 4 3
Hard #2
7 1 3
3 6 9 5
2
2 1 3
9 1 3 2 6
3 9 4 8
8 3 4 5 2 7
4 7 1
Hard #3
7 4
5 3 9 4
1 5 2 6
3 8 1 9 5
2 8
7 3 1 2
2 7 9
8 5
7 4 8
Hard #4
5 9
2 8 5 3
4 3 7 1
6 2 8
1
7 8 6 4 3
5 9 2 7 6
3 1 5
1 3
Hard #5
3 2 6
9 2 3
8 9
1 9 8 5
3 4 7 6 1
2 3 9
6 2 7
9 5 1 2 6
1
Hard #6
3 5 8 2 4
5 9 3
3
2 5
8 5 3
2 1 7 4 8
9 7 1 6 4
3 5
1 4 7
Hard #7
8 6 7
1
5 9 7 4
8 7 9 1 2
3 9 7 6 5
6 7
3 8 4 7
8 3
1 5 3
Hard #8
3 4 7 1 2
1 5 3 8 9
8
9 4 8 7
9 8 7 2 6 4
3 9 4
7 4 8 6
5

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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