Printable Hard Sudoku

Set bdyjq6. 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
3 7 1
8 7 2 6
3 8 2
5 1 7
8 6 7 2
2 4 1 6
3 7 8
2
9 7 8 3
Hard #2
3 7 4 8
6 1
4 1
3 9 5 8 4
4 7 2
6 3
9 8 1
1 2 5 8
4 1 9 5
Hard #3
1 9 3
5 3 8
7
1 4 9 6
9 7 3 1 8
7 1 4
7 6 5
5 6 3 9
3 2 7
Hard #4
6
9 5 7 4 2
7 2 6 1
2 9
3 4 5 9
9 6 7
8 1 3
8 4 5
5 8 2 1
Hard #5
1 6 5 9 7
9 5 8
2 6 5 8
7 4 2 9
2
8 3 4
6 1 2 5
5 9 8 1 6
Hard #6
8 9 2
7
6 4 8 3 1
4 8
8 3 9
7 3 1 9 8
4 5 1 6 7
1 8 2 9 6
Hard #7
9 3 5 6
2 1 7 3
5 1 8 2 7
6 3 7 1
6 3 5
1 9 8 6
8 7
2 3 5
Hard #8
9 6 7
5 1 7 4 6
1 4
7 5 9
7 3 5
8 4 3 7
7 5 2 3
4
4 3 8 1

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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