Sudoku #h794

Sudoku game, level: Hard #794. This Sudoku have 27 given numbers (clues)..
Structure: 1 (2 pcs.), 4 (2 pcs.), 5 (2 pcs.), 8 (2 pcs.), 2 (3 pcs.), 7 (3 pcs.), 9 (3 pcs.), 6 (4 pcs.), 3 (6 pcs.), ∑27.


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