Printable Hard Sudoku

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

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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