Printable Hard Sudoku

Set myuri3. 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
4 5 6
5 7 2 9
3 2 9 7
7 3 4 5
4 6 1
9 8 2
3
8 9 3
6 2 7 9
Hard #2
6 5 2
7 4
1 5 8 3 7
2 7 9
4 8 1
9 6 7 5
6 8
5 3 7
1 9 4 3
Hard #3
6 7 9 5
6 1 7
2 9
5 3 8 2
1
9 6 7 2 8
7 8 6
8 9 4
1 3 7 2
Hard #4
7 9 8 4
6 1
2 1 8 9
3 7 6 5
4
6 1 3
5 8 3
8 1 2 5
4 7 1 6
Hard #5
5 4 7 2
3
9 3 8 4 7
7 8 5 3
2 9 1
4 3 6
7 4 2 9
6
8 2 1 7
Hard #6
7 9
6 4 1 3
4 7 9
5 6 4 8
4 1
8 5 6 3
3 2
3 4 7 2
2 8 5 4
Hard #7
4 6
7 5 1
5 3 8 4
9 7 3 6
8 9 2 3
6 9
6 4 7 3 5
9
8 3 5 7
Hard #8
2 5
3 1
1 3
6 7 9 1 2
4 6
2 5 1 9 8 3
8 5 7
7 3
2 4 1 6 8

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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