Sudoku #h275

Sudoku game, level: Hard #275. This Sudoku have 27 given numbers (clues)..
Structure: 2 (1 pcs.), 5 (1 pcs.), 9 (3 pcs.), 8 (3 pcs.), 6 (3 pcs.), 4 (4 pcs.), 1 (4 pcs.), 7 (4 pcs.), 3 (4 pcs.), ∑27.


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