Sudoku #h187

Sudoku game, level: Hard #187. This Sudoku have 24 given numbers (clues)..
Structure: 1 (1 pcs.), 9 (1 pcs.), 4 (2 pcs.), 5 (2 pcs.), 2 (3 pcs.), 6 (3 pcs.), 8 (3 pcs.), 7 (4 pcs.), 3 (5 pcs.), ∑24.


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