Sudoku #m656

Sudoku game, level: Medium #656. This Sudoku have 27 given numbers (clues)..
Structure: 2 (1 pcs.), 8 (1 pcs.), 9 (2 pcs.), 1 (3 pcs.), 6 (3 pcs.), 3 (4 pcs.), 5 (4 pcs.), 7 (4 pcs.), 4 (5 pcs.), ∑27.


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