Sudoku #m551

Sudoku game, level: Medium #551. This Sudoku have 23 given numbers (clues)..
Structure: 9 (1 pcs.), 4 (1 pcs.), 1 (2 pcs.), 2 (2 pcs.), 5 (3 pcs.), 6 (3 pcs.), 7 (3 pcs.), 3 (4 pcs.), 8 (4 pcs.), ∑23.


Current Time 0:0
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6
1
8
3
8
6
2
8
7
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3
5
9
3
2
7
6
5
1
8
7
3
4
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