Sudoku #m637

Sudoku game, level: Medium #637. This Sudoku have 24 given numbers (clues)..
Structure: 2 (1 pcs.), 6 (2 pcs.), 9 (2 pcs.), 3 (2 pcs.), 7 (3 pcs.), 1 (3 pcs.), 8 (3 pcs.), 5 (4 pcs.), 4 (4 pcs.), ∑24.


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