Printable Hard Sudoku

Set ykq1mw. 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
4 1
9 5 1 3 2
1 3 7 6
2 1 6
7 9 1
5 7 2
9
7 5 9 2
6 7 4 5
Hard #2
4 6 1 7 2
8 1 9 2 7 6
5 2 8 4 7
9 5
2 9 3 1
2 4
5
3 7 8 9
Hard #3
1 9
2 4 8 1
4 6 5 8 3
7 8
2
1 3 7 9
7 8
2 4 1 7
5 7 8 2 6
Hard #4
2 1 3
7 2 5
5 4 7 8 6
8 2 4 6 3
7 8
9 7 4
9 3
1 7 5
3 5 6
Hard #5
9 4
9 2
1 6 3 8 5
3 8 1 2
4 1 3
6 3
6 8 7 1
1 5 7 3
4 3 8
Hard #6
4 1 9 2 6
3 5 4
8
4 1 9 3
7 9 1
6 8 2
1 5
8 3 2 4
3 7 6 9
Hard #7
1 7
9 1 6
8 4
7 4 6
2 1
2 9 7 1 6 5 4
2 6 7 1
4 2 5
6 9 2
Hard #8
2 9
1 4 8
9 8 3
5 6 1
7 4 3
6 1 8
6 1 9
2 3 5 6 4
8 5 7 6

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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