Sudoku #h45

Sudoku game, level: Hard #45. This Sudoku have 27 given numbers (clues)..
Structure: 1 (1 pcs.), 2 (1 pcs.), 3 (2 pcs.), 6 (2 pcs.), 8 (2 pcs.), 5 (4 pcs.), 7 (4 pcs.), 9 (5 pcs.), 4 (6 pcs.), ∑27.


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