Hard Sudoku 2021 to print (free PDF)
Download every hard Sudoku from 2021 — 365 puzzles — as a free printable PDF.
Sample puzzles
6
4
7
2
9
1
1
7
5
4
8
5
9
8
7
4
3
6
8
7
3
2
9
7
2
5
6
3
4
9
8
6
7
3
4
1
5
8
3
6
8
2
3
9
1
2
1
7
4
3
9
1
5
6
2
8
8
7
9
4
2
6
3
1
9
4
3
1
6
7
5
2
8
7
3
2
5
5
1
8
2
4
7
9
6
3
4
1
1
3
6
9
9
8
3
1
9
7
4
6
5
7
8
9
7
1
9
2
5
8
4
9
5
4
9
1
7
5
1
4
3
7
2
1
9
2
7
8
2
6
7
7
9
8
8
7
4
3
6
5
7
4
7
6
3
4
9
2
2
7
5
6
4
6
7
2
1
3
8
9
2
9
6
1
5
8
3
1
8
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