Sudoku #h111

Sudoku game, level: Hard #111. This Sudoku have 24 given numbers (clues)..
Structure: 1 (2 pcs.), 2 (2 pcs.), 3 (2 pcs.), 4 (2 pcs.), 9 (2 pcs.), 7 (3 pcs.), 8 (3 pcs.), 5 (4 pcs.), 6 (4 pcs.), ∑24.


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