Sudoku #x904

Sudoku game, level: Expert #904. This Sudoku have 28 given numbers (clues)..
Structure: 2 (0 pcs.), 7 (2 pcs.), 9 (2 pcs.), 1 (3 pcs.), 4 (3 pcs.), 5 (4 pcs.), 3 (4 pcs.), 8 (5 pcs.), 6 (5 pcs.), ∑28.


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