Sudoku #x446

Sudoku game, level: Expert #446. This Sudoku have 26 given numbers (clues)..
Structure: 7 (2 pcs.), 3 (2 pcs.), 5 (2 pcs.), 2 (2 pcs.), 4 (3 pcs.), 6 (3 pcs.), 9 (4 pcs.), 8 (4 pcs.), 1 (4 pcs.), ∑26.


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