Printable Hard Sudoku

Set hvcg4e. 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
7 4 3
2 8 7
9 8 5 4
4 7
6 9 1 8
9 8 7 6
6
9 4 2 1 5 3
1 2
Hard #2
2 8 7
7 4 3 1 6
5 7 2
3 9 6 2
6 2 8
5
9 4 2 3 6
4
1 3 4 6
Hard #3
9 2 1 4
4 8 5
9 7
7
6 4 9 2 8
1 9
9 7 5 3
6 1 4
8 2 6 7 1
Hard #4
2 5 8 6
7 9
9 3
5 7 4 9 3 6
6 1
3 9 8
5 2
5 3 9 4
9 1 2 8
Hard #5
2 4 1 9
4
4 7 3 6
6 2
1 2 5 9
3 4 7
7 9 1 3
5 4
4 1 5 9 6
Hard #6
4
5 7 8 1 6
1 2 8
6 9 7 8
8 5 1
3 7 4
7 3 2
1 9 5
3 6 9 7
Hard #7
2 4 8
1 7 5
6 7 3
9 6 5 1
2 8
5 6 4 8
2 9 6 1
4
7 6 4 9 5
Hard #8
7 3
1 8 5 3 4
4 9 2 6 8
6 1
3 9
5 6
6 9 8 5 7
7 6 8
2 4 1

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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