Sudoku #x758

Sudoku game, level: Expert #758. This Sudoku have 20 given numbers (clues)..
Structure: 5 (1 pcs.), 4 (2 pcs.), 6 (2 pcs.), 7 (2 pcs.), 8 (2 pcs.), 9 (2 pcs.), 1 (3 pcs.), 2 (3 pcs.), 3 (3 pcs.), ∑20.


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9
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6
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9
3
1
6
8
7
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