Sudoku #m799

Sudoku game, level: Medium #799. This Sudoku have 27 given numbers (clues)..
Structure: 1 (1 pcs.), 6 (3 pcs.), 9 (3 pcs.), 8 (3 pcs.), 5 (3 pcs.), 4 (3 pcs.), 2 (3 pcs.), 7 (4 pcs.), 3 (4 pcs.), ∑27.


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