非常困难 Sudoku 2021 to print (free PDF)
Download every 非常困难 Sudoku from 2021 — 365 puzzles — as a free printable PDF.
预览
4
2
5
5
6
8
2
9
7
8
6
7
9
3
5
7
5
9
3
8
6
1
1
4
3
4
6
2
1
8
9
2
8
4
9
4
1
5
6
7
3
5
2
3
2
4
8
1
5
4
4
9
7
2
3
3
5
7
9
4
8
1
2
2
5
4
6
8
3
9
8
1
9
6
6
5
9
3
7
6
2
9
4
6
4
3
7
2
3
7
7
6
5
9
5
8
2
4
3
1
5
8
1
5
9
3
7
6
8
5
1
2
6
3
9
5
8
7
8
3
9
3
6
1
6
3
7
5
4
8
2
6
4
9
8
1
3
5
5
3
8
7
9
7
2
4
8
9
7
5
2
4
1
9
6
8
4
9
1
2
9
6
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