Printable Hard Sudoku

Set q7fz6y. 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 4 8
8 2 6 9
3 9 1
6 2 1 3
1 4 5 6
5 6 8
6 9
1 7 5
7 4 3
Hard #2
6 2 1 5
2 5 8
3 4
2 7
5 7 4 6 2 8 9
1 8 7 6
4 6
9 6
8 7 9
Hard #3
7 5 3
8 6 4 5
6 8 4 7
8 2
7 1 4
9 6 5
1 3 9 5
4 8 5 9 6
8
Hard #4
4 1
9 7 4 3 2
6 2 1 8 7
3 1 9
8 6 1
4 3 6
9 8 2 1 5 3
7
1
Hard #5
8 9 4 1
4 5
7 1 5
1 2 5
2 8 9
1 5 4 2
8 5 1 4
2 6 9
9 4 7
Hard #6
5 4 2 8 7 9
1 6 5 2
6 8
1 9
8 1 5
7 4 2
3 7 2
8 1 9
9 7 5
Hard #7
8 1 2 9
4 7 5
7 2 3
1 8 7
4 6 1 8
9 2 4
9 1
9 8 6 2
3 7 9
Hard #8
7 4 3 2 1
6
9 2 6
4 8 1 3
3 6 1 8
8 4
2 5 7
7 2 6
7 4 5 9

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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