Printable Hard Sudoku

Set g0ta58. 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
2
8 5 7
6 5 9 2
3 5
8 6 2
9 1 5 7 8
3 9 2 4 6
8
2 5 4 8 1
Hard #2
2 5 1 9
9 4 6 5
5 8 1 9
9 6 2
7 1
8 6 3 4
6 3 8
2 3 7
9 5
Hard #3
1 8 7 6
8 4 9 3
2 9 5
4 8
7 2
3 1 2 7
2 6 3 5
6 5 1 8
9 8
Hard #4
8 9 7
1 4 2
2 9 6
5 1 9 3 7
7 8 9 2 5 1
5 8 4
2 5 6 7
3 9
Hard #5
3 4 7 9
4 9 2 8
7 2 8 3
8 3 1
4 9 6
5 1 4
1 2 8
8 7
6 7 9
Hard #6
1 7
4 9 3 8 5
6 7
8 5 6
5 4
3 9 4 2
3 4 1
3 4 7 2
4 8 9 3
Hard #7
8 3 7
3 7 9 5 6 2
2 4 5 1
6 7 8
3 4
6
7 6 8 1 5
8 2 5 3
9
Hard #8
9 1 5 4
2 8
5 1 3
6 3 4 5
7 6 3 9
3 4
1 8 7 5 9
1 9
4 2 8

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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