Sudoku #x700

Sudoku game, level: Expert #700. This Sudoku have 30 given numbers (clues)..
Structure: 7 (2 pcs.), 3 (2 pcs.), 1 (3 pcs.), 2 (3 pcs.), 5 (3 pcs.), 4 (4 pcs.), 6 (4 pcs.), 8 (4 pcs.), 9 (5 pcs.), ∑30.


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