Sudoku #h629

Sudoku game, level: Hard #629. This Sudoku have 30 given numbers (clues)..
Structure: 8 (1 pcs.), 9 (2 pcs.), 6 (2 pcs.), 5 (2 pcs.), 2 (3 pcs.), 7 (3 pcs.), 1 (4 pcs.), 3 (6 pcs.), 4 (7 pcs.), ∑30.


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3
6
4
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9
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7
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8
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