Sudoku #x920

Sudoku game, level: Expert #920. This Sudoku have 30 given numbers (clues)..
Structure: 4 (1 pcs.), 6 (3 pcs.), 8 (3 pcs.), 1 (3 pcs.), 5 (3 pcs.), 9 (4 pcs.), 7 (4 pcs.), 3 (4 pcs.), 2 (5 pcs.), ∑30.


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