Printable Hard Sudoku

Set g26msy. 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
3 7 1
7 9
6 2 5 4
5
8 1 9 7 3
4 5 2
7 4 6 8 3
2 3 4
5 8 7
Hard #2
5 3 6
1 6 5 8
2 1 5
6 1
8 3 2 4
7 4 8 6
9 3 6 1
2 6
3 8 5
Hard #3
1 9 3
8 5 1 6
4 3
3 7 1
8 4 6 9
7 2
5 8 9 6
6 2 3
1 2 7 5
Hard #4
4 9 2 1 3
7 5
3 8 5
7 4 6 2
6 8
3 8 1 2
2 3 1
9 5
6 7 9 2
Hard #5
8 7 2
6 8 3 9
7 3 2 6
2 3 9 8
7 5 4
3 5 7
9 4 1 6
1
2 1 6
Hard #6
2 7 6 9
9 2 8 3
4 9 2
3 4 5
5 2 4 9 1
7 2
6 7
4 5 7 6
5 8
Hard #7
1 6 8
8 4 7 9 3
6 4 7 5
7
9 1
8 9 3 4
1 6 7
3 8 7
9 1 3 5
Hard #8
9 6 5 2
3
8 9 6 1 7 4
5 3 4 9
4 1 8
6 2 3 8
8 4
7 5
2 1 3

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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