Printable Hard Sudoku

Set 34ge1j. 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 2 8
4 8 5
5 6 7
8 2 6
9 2 4 7
6 4 5
4 7
5 4 1 8
3 1 8 6
Hard #2
1 9 6 3
5 7 1
6 5
2 7 6 9
6 3 9 1
5 4 6 8
4 8 2
6
2 4 8 5
Hard #3
4 6 7
3 1
7 3 8 2
9 3 4 2
7 3 4
8 9
1 2 7 6
4 7
9 5 2 6 4
Hard #4
1 6
7 4 5 1
8 3
8 1 3
3 7 5 4
3 7 6
3 1 9 6
8
8 5 1 4 3 2
Hard #5
7 2
7 4 3 8
4 1 6 7
4 3
9 1 3 5 6 2
2 7 9
7 1 6
5 6 2
9 8
Hard #6
9 6 1 7
4 1 3 9 6
5 1
3 6
8 4 9
5 4 9 7
5 4 6 9
8
8 2 1 7
Hard #7
4 6
6 7 3 8
4 8 1
9 7 8 6 5
4 6 3
8 2 7
3 9 7 1
4 5
1 3 2
Hard #8
1 2 7
9 2 7 4
7 6 5 3
9 7 6
8 2 4
8 5 2 3
1 4 8 2
9 7
6 4

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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