Sudoku #x221

Sudoku game, level: Expert #221. This Sudoku have 29 given numbers (clues)..
Structure: 6 (1 pcs.), 8 (2 pcs.), 1 (3 pcs.), 3 (3 pcs.), 5 (3 pcs.), 9 (3 pcs.), 4 (4 pcs.), 7 (4 pcs.), 2 (6 pcs.), ∑29.


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8
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9
7
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