Sudoku #x229

Sudoku game, level: Expert #229. This Sudoku have 25 given numbers (clues)..
Structure: 6 (1 pcs.), 4 (2 pcs.), 2 (2 pcs.), 7 (2 pcs.), 5 (3 pcs.), 1 (3 pcs.), 9 (4 pcs.), 3 (4 pcs.), 8 (4 pcs.), ∑25.


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