Printable Hard Sudoku

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

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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