Sudoku #h439

Sudoku game, level: Hard #439. This Sudoku have 26 given numbers (clues)..
Structure: 2 (2 pcs.), 5 (2 pcs.), 9 (2 pcs.), 3 (3 pcs.), 4 (3 pcs.), 6 (3 pcs.), 7 (3 pcs.), 8 (3 pcs.), 1 (5 pcs.), ∑26.


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