Sudoku #h957

Sudoku game, level: Hard #957. This Sudoku have 28 given numbers (clues)..
Structure: 7 (1 pcs.), 8 (2 pcs.), 9 (2 pcs.), 2 (2 pcs.), 6 (3 pcs.), 1 (3 pcs.), 3 (4 pcs.), 5 (5 pcs.), 4 (6 pcs.), ∑28.


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