Sudoku #m255

Sudoku game, level: Medium #255. This Sudoku have 23 given numbers (clues)..
Structure: 4 (1 pcs.), 6 (1 pcs.), 5 (2 pcs.), 2 (3 pcs.), 3 (3 pcs.), 7 (3 pcs.), 8 (3 pcs.), 9 (3 pcs.), 1 (4 pcs.), ∑23.


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