Sudoku #m206

Sudoku game, level: Medium #206. This Sudoku have 23 given numbers (clues)..
Structure: 2 (1 pcs.), 4 (2 pcs.), 5 (2 pcs.), 6 (2 pcs.), 3 (3 pcs.), 7 (3 pcs.), 8 (3 pcs.), 9 (3 pcs.), 1 (4 pcs.), ∑23.


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