Sudoku #b12

Sudoku game, level: Beginner #12. This Sudoku have 31 given numbers (clues)..
Structure: 7 (2 pcs.), 8 (2 pcs.), 4 (3 pcs.), 5 (3 pcs.), 6 (3 pcs.), 1 (4 pcs.), 2 (4 pcs.), 3 (5 pcs.), 9 (5 pcs.), ∑31.


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