Sudoku #m857

Sudoku game, level: Medium #857. This Sudoku have 24 given numbers (clues)..
Structure: 1 (1 pcs.), 3 (2 pcs.), 4 (2 pcs.), 8 (2 pcs.), 5 (3 pcs.), 6 (3 pcs.), 7 (3 pcs.), 2 (4 pcs.), 9 (4 pcs.), ∑24.


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