Sudoku #m365

Sudoku game, level: Medium #365. This Sudoku have 23 given numbers (clues)..
Structure: 8 (1 pcs.), 4 (2 pcs.), 5 (2 pcs.), 1 (3 pcs.), 2 (3 pcs.), 3 (3 pcs.), 6 (3 pcs.), 7 (3 pcs.), 9 (3 pcs.), ∑23.


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