Sudoku #x255

Sudoku game, level: Expert #255. This Sudoku have 30 given numbers (clues)..
Structure: 1 (0 pcs.), 8 (2 pcs.), 4 (3 pcs.), 9 (3 pcs.), 2 (3 pcs.), 6 (4 pcs.), 5 (5 pcs.), 3 (5 pcs.), 7 (5 pcs.), ∑30.


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