Sudoku #x504

Sudoku game, level: Expert #504. This Sudoku have 29 given numbers (clues)..
Structure: 7 (0 pcs.), 2 (1 pcs.), 3 (2 pcs.), 6 (3 pcs.), 9 (3 pcs.), 1 (3 pcs.), 8 (4 pcs.), 5 (6 pcs.), 4 (7 pcs.), ∑29.


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5
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9
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9
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9
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