Sudoku #h262

Sudoku game, level: Hard #262. This Sudoku have 25 given numbers (clues)..
Structure: 3 (1 pcs.), 9 (2 pcs.), 5 (2 pcs.), 2 (2 pcs.), 4 (3 pcs.), 1 (3 pcs.), 8 (4 pcs.), 6 (4 pcs.), 7 (4 pcs.), ∑25.


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