Sudoku #h849

Sudoku game, level: Hard #849. This Sudoku have 25 given numbers (clues)..
Structure: 1 (2 pcs.), 5 (2 pcs.), 9 (2 pcs.), 2 (3 pcs.), 3 (3 pcs.), 4 (3 pcs.), 6 (3 pcs.), 8 (3 pcs.), 7 (4 pcs.), ∑25.


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