Sudoku #x711

Sudoku game, level: Expert #711. This Sudoku have 30 given numbers (clues)..
Structure: 8 (0 pcs.), 4 (1 pcs.), 3 (2 pcs.), 1 (3 pcs.), 2 (4 pcs.), 7 (4 pcs.), 9 (5 pcs.), 5 (5 pcs.), 6 (6 pcs.), ∑30.


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