Printable Hard Sudoku

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

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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