Printable Hard Sudoku

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

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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