Sudoku #x744

Sudoku game, level: Expert #744. This Sudoku have 28 given numbers (clues)..
Structure: 1 (1 pcs.), 7 (1 pcs.), 3 (2 pcs.), 9 (3 pcs.), 8 (3 pcs.), 5 (3 pcs.), 6 (3 pcs.), 2 (5 pcs.), 4 (7 pcs.), ∑28.


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