Easy Sudoku

9 1 7 5 6 3 4 8 2
3 4 5 2 8 7 9 1 6
2 9 1 4 5 7 3
7 9 4 5 1 2 3 8
5 3 1 8 7 2 6 4 9
8 2 4 3 9 6 1 7
7 9 1 5 8 4
4 5 1
1 4 5
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Medium Sudoku

2 6 3 5 1
1 7 2 3 6 4
5 6 2 7
1 7 2
7 1 2 5 3
2 8 7 1 5
7 4 3 1 5 2 8
4 5 3 9 8 2 7 1 6
1 8 2 6 5 7 4 3 9
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Hard Sudoku

2 5 4 6
4 6 2 5
1 5 2 6 4 7 3
6 9 5 7 1 2 8
8 2 7 5 3 9
5 3 2 8 6 4 7
1 8 5
2 5 9 3
5 9
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Very Hard Sudoku

5 2 4
6 5 3
2 1 6 3 5 8
8 3 7 2
2 6 8 7
8 5 1 4
3 4 9
4 7 1 8
7 6 5 1
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Insane Sudoku

2
3 9 6
1 4 6
9 5 1 8
1 3 2
1 5 3
7 4 1 6
6 9 8 5
2
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