Printable Hard Sudoku

Set vgxm2t. 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
6 9 1
1 8 5 3
7 2
3 8 7 6
8 9 3 5
1 6 2 3 4
3 6 8
4 9 3 5
Hard #2
6 7
8 7
9 5 2 8
9 8 1 3 7 4 5
4 7 8
2 3
8 4 3
7 1 3 2
5 1
Hard #3
5 7 4 2
3 2 6 1
1 4 3
5 9 6
8 6 3
9 8
4 9 7 3 5 8
7 2
6 8
Hard #4
3 5
6 8 5
7 2 6 9
1 2 9 8
3 6 5
9 8
8 7 9 2 3
2 4
5 4 1 9
Hard #5
2 8
7 2 4 5
5 9 7 4
9 5 8
8 3 9 6 5 7
2 7 8 9 1
4 8 1
8 2
Hard #6
4
3 1 7
6 4 5 3 2
2
4 9 5 8 1
8 1 9 7 4
2 1 3 9
9 8
8 4 6
Hard #7
8 4 2 5
6 9 3
2 6 1
1 3 4 2
4 5 9 2 3
3
3 7 9 2 5
7 1
5 6
Hard #8
1 6 4 9
5 7 3
7 1 4 8
5 8 9 4
2 4 3
8 5 6
9 5 8
2 6
7 4 1

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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