Sudoku #x625

Sudoku game, level: Expert #625. This Sudoku have 28 given numbers (clues)..
Structure: 8 (1 pcs.), 2 (2 pcs.), 7 (2 pcs.), 6 (3 pcs.), 9 (3 pcs.), 4 (4 pcs.), 3 (4 pcs.), 1 (4 pcs.), 5 (5 pcs.), ∑28.


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9
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7
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8
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9
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6
3
1
5
4
9
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