Printable Hard Sudoku

Set 1brw9iy. 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
6 3 5 8 1
8 6 5
4 8 9
6 5 4 8
6 5
7 9 3
4 1 8
7 1 2
9 1 5
Hard #2
4 7 3 6
9 3
7 3 9 8
8 4 2 3
6 9 5
6 1 4
9 4 2
2 1 8
8 4 5
Hard #3
9
6 5
1 5 8 9 4
1 7 8
8 7 9
1 6 4
7 5 2 8
4 2 5 1
9 5 7 3
Hard #4
9 2
8 3 1 2
7 3 2 4 8
9 2 6 3 8
7
6 9
3 1
1 5 9 8
8 4 1 5
Hard #5
2 7
6 8 9
7 4
9 2 5 3
4 6 7 5 1 8
7 9
7 4 5 2 6
3 1
2 8 3
Hard #6
7 3 1 2 5
9 4 1
2 8 9
4 5
5 2
7 3 5 1
6 4 9 3
7 9 5 8
2 7
Hard #7
8 9 4
9 2
4 5 7
9 4 7 2
6 3 8 5 4
7 6
6 1 7
2 7 5
8 9 4 1
Hard #8
8 3
7 4 2 6 1
5 1 7
5 1
9 2 8
3 8 6 9
2 4 7
3 7
4 7 1 5 3

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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