Sudoku #m183

Sudoku game, level: Medium #183. This Sudoku have 23 given numbers (clues)..
Structure: 3 (1 pcs.), 6 (1 pcs.), 1 (2 pcs.), 2 (2 pcs.), 4 (3 pcs.), 5 (3 pcs.), 8 (3 pcs.), 7 (4 pcs.), 9 (4 pcs.), ∑23.


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