Sudoku #h956

Sudoku game, level: Hard #956. This Sudoku have 25 given numbers (clues)..
Structure: 1 (2 pcs.), 3 (2 pcs.), 7 (2 pcs.), 9 (2 pcs.), 2 (3 pcs.), 5 (3 pcs.), 8 (3 pcs.), 4 (4 pcs.), 6 (4 pcs.), ∑25.


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