Sudoku #m391

Sudoku game, level: Medium #391. This Sudoku have 27 given numbers (clues)..
Structure: 7 (2 pcs.), 8 (3 pcs.), 9 (3 pcs.), 6 (3 pcs.), 5 (3 pcs.), 3 (3 pcs.), 4 (3 pcs.), 1 (3 pcs.), 2 (4 pcs.), ∑27.


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