Sudoku #m82

Sudoku game, level: Medium #82. This Sudoku have 27 given numbers (clues)..
Structure: 4 (1 pcs.), 5 (2 pcs.), 1 (3 pcs.), 7 (3 pcs.), 8 (3 pcs.), 9 (3 pcs.), 2 (4 pcs.), 3 (4 pcs.), 6 (4 pcs.), ∑27.


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