Sudoku #x67

Sudoku game, level: Expert #67. This Sudoku have 27 given numbers (clues)..
Structure: 7 (1 pcs.), 3 (2 pcs.), 6 (2 pcs.), 9 (2 pcs.), 1 (3 pcs.), 5 (3 pcs.), 4 (4 pcs.), 8 (4 pcs.), 2 (6 pcs.), ∑27.


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