Sudoku #e991

Sudoku game, level: Easy #991. This Sudoku have 30 given numbers (clues)..
Structure: 8 (3 pcs.), 9 (3 pcs.), 1 (3 pcs.), 5 (3 pcs.), 2 (3 pcs.), 3 (3 pcs.), 7 (4 pcs.), 6 (4 pcs.), 4 (4 pcs.), ∑30.


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