Sudoku #x123

Sudoku game, level: Expert #123. This Sudoku have 29 given numbers (clues)..
Structure: 2 (2 pcs.), 5 (2 pcs.), 7 (2 pcs.), 8 (2 pcs.), 4 (3 pcs.), 1 (4 pcs.), 3 (4 pcs.), 6 (5 pcs.), 9 (5 pcs.), ∑29.


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