Sudoku #m667

Sudoku game, level: Medium #667. This Sudoku have 26 given numbers (clues)..
Structure: 3 (2 pcs.), 4 (2 pcs.), 9 (2 pcs.), 1 (3 pcs.), 5 (3 pcs.), 6 (3 pcs.), 7 (3 pcs.), 2 (4 pcs.), 8 (4 pcs.), ∑26.


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