Sudoku #x628

Sudoku game, level: Expert #628. This Sudoku have 27 given numbers (clues)..
Structure: 6 (1 pcs.), 8 (1 pcs.), 9 (2 pcs.), 1 (2 pcs.), 7 (4 pcs.), 4 (4 pcs.), 2 (4 pcs.), 3 (4 pcs.), 5 (5 pcs.), ∑27.


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