Printable Hard Sudoku

Set kp2fgv. 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
8 2 3 9 1
3 4 9 2 7
9 8 6 5
4 9 3
6 3 1
9 3
6 3 7 5
7 5 9
Hard #2
7 6 5
9 2 4
5 9 1 2
6 1 2 8
3 4 5 9 2 1
9 3
6 7 3 4
2 5
1
Hard #3
6 9
7 5 4
5 8 4 7 2
4 7 3
3 9 4
7 5 4 1
9 7 8 3
2 8 9 5
3
Hard #4
1 5 6
6 2
1 6 5
6 4
7 8 2 9
9 3 2
5 3 9 1 6
8 1 7 9
1 6 5
Hard #5
3 2
5 8 4 3
6 2 3 5 7 1
5 1 9
1 2
7 9 8 6
1
3 8 6 7
1 9 2
Hard #6
7 2 6
1 6 8
5 1
2
6 9 8 1 2 3
4 7
4 2 6
6 5 1 2
2 3 7 5 8
Hard #7
8 9 2 4 7 6
1 5 9 3
5 4
9 4
2 7 9 6
6 3 1 4
7
7 4
2 8 5 1
Hard #8
2 8
9 1 4
6 5 9 7
1 7 4 8
7 2
3 5
3 4 5 1
8 3 6 1 4 7
1 6

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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