Sudoku #m781

Sudoku game, level: Medium #781. This Sudoku have 23 given numbers (clues)..
Structure: 1 (2 pcs.), 2 (2 pcs.), 6 (2 pcs.), 7 (2 pcs.), 8 (2 pcs.), 9 (2 pcs.), 4 (3 pcs.), 3 (4 pcs.), 5 (4 pcs.), ∑23.


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