Sudoku #x507

Sudoku game, level: Expert #507. This Sudoku have 27 given numbers (clues)..
Structure: 7 (0 pcs.), 1 (2 pcs.), 6 (2 pcs.), 8 (2 pcs.), 9 (2 pcs.), 2 (3 pcs.), 4 (5 pcs.), 5 (5 pcs.), 3 (6 pcs.), ∑27.


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