Sudoku #m171

Sudoku game, level: Medium #171. This Sudoku have 26 given numbers (clues)..
Structure: 3 (1 pcs.), 4 (2 pcs.), 5 (2 pcs.), 1 (3 pcs.), 8 (3 pcs.), 9 (3 pcs.), 2 (4 pcs.), 6 (4 pcs.), 7 (4 pcs.), ∑26.


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