Printable Hard Sudoku

Set mbr2hl. 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 4 6 5
5 9
9 6 5 8
9 4 3 2
7 8
3 2 7
4 2 5
3 5 2
1 3 7 6
Hard #2
4 5 6 3
6 7 2 9 4
8 4 6 2
8 4 3
5 1 7
1 8
9 6 3
1 8
6 7 4
Hard #3
3 4 6 2
6 3
5 7 6 2 8
1 2 6
7 9
8 9 5 1
7 8 1
7 1 3
5 9 4
Hard #4
4 9 8
3 6 2 7
7 2
1 7 5 3 9
5 6 7
9 8 4
1 7
7 4 8
4 8 1 5
Hard #5
9 5
8 2
2 7 4 5
8 9
7 6 1
9 3 8 6 2
7 1 9 6
3 1
3 5 1 7 8
Hard #6
5 6 8 1
1 4 7
2 8
7 1 6
3 9 1
2 3 5 1
3 4 9 2 8 7
9
8 7 5
Hard #7
6
6 2 4 7
7 9 5 1
6 5 8
8 9 1 6 7
1 4
2 4 6 9
3 4 7 5 2
3
Hard #8
8 6 9 1
3 4 9
3 1 2
9 4 7
3 5 6 2
1 4
4 6 2
4 5 8 3 7 6
2

Answers are on the last page of the PDF.

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Techniques for hard puzzles

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