Hard Sudoku 2007 to print (free PDF)
Download every hard Sudoku from 2007 — 365 puzzles — as a free printable PDF.
Sample puzzles
9
4
7
8
3
7
2
5
9
4
6
3
5
5
8
7
6
2
1
6
7
4
1
5
9
2
1
3
1
4
3
2
5
6
4
1
2
1
6
4
7
8
2
3
1
5
9
3
1
8
9
8
1
2
7
6
5
6
9
1
3
2
7
9
5
9
4
6
4
1
5
6
8
3
2
4
7
1
5
8
3
1
6
4
7
4
8
9
6
2
6
8
7
2
8
1
2
5
9
5
3
2
4
1
7
5
3
7
3
1
9
6
2
8
3
9
6
1
7
8
2
3
4
5
1
6
1
7
4
2
4
5
1
9
8
3
9
5
8
9
2
5
7
9
3
1
8
6
1
2
5
4
7
4
3
3
7
6
9
4
6
5
1
2
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