Sudoku #h822

Sudoku game, level: Hard #822. This Sudoku have 26 given numbers (clues)..
Structure: 5 (1 pcs.), 4 (2 pcs.), 9 (2 pcs.), 1 (3 pcs.), 2 (3 pcs.), 7 (3 pcs.), 3 (4 pcs.), 6 (4 pcs.), 8 (4 pcs.), ∑26.


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