Sudoku #m303

Sudoku game, level: Medium #303. This Sudoku have 26 given numbers (clues)..
Structure: 1 (1 pcs.), 2 (2 pcs.), 3 (3 pcs.), 5 (3 pcs.), 6 (3 pcs.), 7 (3 pcs.), 8 (3 pcs.), 4 (4 pcs.), 9 (4 pcs.), ∑26.


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