Easy Sudoku

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

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

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

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

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