Sudoku #x803

Sudoku game, level: Expert #803. This Sudoku have 28 given numbers (clues)..
Structure: 2 (0 pcs.), 4 (2 pcs.), 6 (3 pcs.), 1 (3 pcs.), 9 (4 pcs.), 8 (4 pcs.), 5 (4 pcs.), 3 (4 pcs.), 7 (4 pcs.), ∑28.


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