Printable Hard Sudoku

Set yg84fe. 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 2 9 1
9 6 5 3
7 5 9
7 8 5 4 9
2
9 1 3 7
8 6 7 1
8 2 7
9
Hard #2
3 7 9 4
2 9 8
4 1
9 5 6 3
4 3 7
6 7 8
2 4 1 7
8 5 2
4 9 8
Hard #3
1 3 8 7 6
2 6 8 9
7
3 9 4
2 7 5 1
5 4 3
3 1 2
5 4 6
8 3 7
Hard #4
7 5
3 6 9 4 8
9 1 6 8
9 7 3
4 8 2
7 1 2 3
3 1 5
2 1 9
5 6
Hard #5
8 2 5
3 1 9 4 6 8 5
6 8 3
7 2
4 3
6 1 7
8 5 3 2
5
3 5 6 4
Hard #6
6 4
6 8 5 2
3 1 8 9 6
7 3
6 9 2
9 7 1 4
2 5
7 4 9
5 2 6 7
Hard #7
8
5 2 4
7 8 4 6 3
7 1 3
5 3 2 6
2 3 5 7
6 4 9
8 3 7
4 9 3
Hard #8
9 2 7
7 1
3 4 6
7 8
4 5 8 1 9
5 4 6 8
7 6 3 2
1 2 4 3 5
2

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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