Sudoku #b621

Sudoku game, level: Beginner #621. This Sudoku have 27 given numbers (clues)..
Structure: 4 (1 pcs.), 9 (2 pcs.), 5 (3 pcs.), 6 (3 pcs.), 7 (3 pcs.), 8 (3 pcs.), 1 (4 pcs.), 2 (4 pcs.), 3 (4 pcs.), ∑27.


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