Sudoku #x558

Sudoku game, level: Expert #558. This Sudoku have 27 given numbers (clues)..
Structure: 7 (1 pcs.), 5 (2 pcs.), 6 (2 pcs.), 2 (3 pcs.), 4 (3 pcs.), 9 (3 pcs.), 3 (4 pcs.), 8 (4 pcs.), 1 (5 pcs.), ∑27.


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