Sudoku #h815

Sudoku game, level: Hard #815. This Sudoku have 26 given numbers (clues)..
Structure: 9 (1 pcs.), 7 (2 pcs.), 1 (2 pcs.), 5 (2 pcs.), 4 (2 pcs.), 8 (4 pcs.), 6 (4 pcs.), 2 (4 pcs.), 3 (5 pcs.), ∑26.


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