Sudoku #x824

Sudoku game, level: Expert #824. This Sudoku have 30 given numbers (clues)..
Structure: 8 (1 pcs.), 3 (2 pcs.), 6 (3 pcs.), 1 (3 pcs.), 2 (3 pcs.), 7 (4 pcs.), 4 (4 pcs.), 9 (5 pcs.), 5 (5 pcs.), ∑30.


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