Sudoku #h821

Sudoku game, level: Hard #821. This Sudoku have 29 given numbers (clues)..
Structure: 2 (0 pcs.), 1 (3 pcs.), 4 (3 pcs.), 6 (3 pcs.), 8 (3 pcs.), 5 (4 pcs.), 7 (4 pcs.), 9 (4 pcs.), 3 (5 pcs.), ∑29.


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