Sudoku #h311

Sudoku game, level: Hard #311. This Sudoku have 26 given numbers (clues)..
Structure: 5 (1 pcs.), 7 (2 pcs.), 3 (2 pcs.), 6 (3 pcs.), 9 (3 pcs.), 8 (3 pcs.), 2 (3 pcs.), 1 (4 pcs.), 4 (5 pcs.), ∑26.


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