Printable Hard Sudoku

Set d2e214. 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 2 4 6 9
1 4 3 6
9 1
6 1 8
4 5 3
2 4 6
4 1 2 3 7 5
7 5
3
Hard #2
1 4 2 3 8
3 4 2 7
8 5 6
4 8
8 4 6
7 5 8
6 3
5 7
7 9 8 1 3
Hard #3
1 7 3 8
6 1
5 6 9
9 3 6 7
2 7 4
4
8 1 2 9
6 7 1
5 1 4 2 3
Hard #4
4 1
7 5
3 9 7 6
2
4 6 9 5
5 6 3 8 2 7 4
2 1 5 3 6
9
2 1 9
Hard #5
5 8
1 8 2 5
2 3 5 4
9 4 6 3
8 9 3 7
5 6 8
2 9 8 1
1
3 2 7
Hard #6
8 1 7
7 3 9
5 6 2 8 4
1 2 9
4 5 9 8 7 1
9
1 9
9 5 8 3
5 4
Hard #7
5 9 7
9 6 8
7 9 4 1
9 4 1
7 1 2
8 9 5 3 4
6 4 1 8
2 3
5 7
Hard #8
7 6 9
7 4 6 9 1 3
9 5 2 8
6 9
8 3
4 6 1
7 2 6
8 2 4
3 1 9

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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