Sudoku #x627

Sudoku game, level: Expert #627. This Sudoku have 28 given numbers (clues)..
Structure: 1 (1 pcs.), 4 (2 pcs.), 6 (2 pcs.), 9 (2 pcs.), 2 (3 pcs.), 3 (3 pcs.), 5 (5 pcs.), 7 (5 pcs.), 8 (5 pcs.), ∑28.


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