Sudoku #x79

Sudoku game, level: Expert #79. This Sudoku have 28 given numbers (clues)..
Structure: 2 (0 pcs.), 4 (2 pcs.), 5 (2 pcs.), 8 (3 pcs.), 9 (4 pcs.), 7 (4 pcs.), 6 (4 pcs.), 1 (4 pcs.), 3 (5 pcs.), ∑28.


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