Sudoku #m50

Sudoku game, level: Medium #50. This Sudoku have 25 given numbers (clues)..
Structure: 1 (2 pcs.), 3 (2 pcs.), 5 (2 pcs.), 8 (2 pcs.), 4 (3 pcs.), 7 (3 pcs.), 9 (3 pcs.), 2 (4 pcs.), 6 (4 pcs.), ∑25.


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