Easy Sudoku

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

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

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

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

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