Sudoku #x193

Sudoku game, level: Expert #193. This Sudoku have 28 given numbers (clues)..
Structure: 6 (1 pcs.), 7 (2 pcs.), 4 (2 pcs.), 5 (2 pcs.), 3 (2 pcs.), 9 (4 pcs.), 1 (4 pcs.), 8 (5 pcs.), 2 (6 pcs.), ∑28.


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