Sudoku #x624

Sudoku game, level: Expert #624. This Sudoku have 26 given numbers (clues)..
Structure: 4 (1 pcs.), 7 (2 pcs.), 9 (2 pcs.), 6 (2 pcs.), 5 (3 pcs.), 2 (4 pcs.), 8 (4 pcs.), 3 (4 pcs.), 1 (4 pcs.), ∑26.


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