Sudoku #m307

Sudoku game, level: Medium #307. This Sudoku have 23 given numbers (clues)..
Structure: 2 (2 pcs.), 3 (2 pcs.), 4 (2 pcs.), 6 (2 pcs.), 8 (2 pcs.), 1 (3 pcs.), 7 (3 pcs.), 9 (3 pcs.), 5 (4 pcs.), ∑23.


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1
9
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7
9
2
5
1
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3
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