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Sudoku puzzles (Su Doku)

My database includes 2967 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row and every column contains the digits 1 through 16. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

271610 puzzles downloaded.

3       4 1 7       8 11 5   14 16
  1     3 5   9         4 11   6
    16 1     11 5 7   14   2   8 10
7   13   11 10 8     5   2 3 6 9 4
14   5 8     15 6   1   10 9 12 13 3
  13         4 2 9 14 12         7
  5   10 16       1     3 14 8 12  
6 16     5       3 12   4 8   10  
  3   6 9   13 8       1     15 12
  6 3 5 7     10       14 13   11  
1         13 12 7 10 15         5  
2 15 9 4 8   1   13 3     12 14   5
9 8 6 12 1   10     11 5 7   13   15
11 4   9   8   13 5 2     7 3    
12   4 11         16   13 15     3  
5 2   14 13 9       10 11 12       8
Showing puzzle number: 2260
Puzzletype: Symmetrical Sudoku
Startnumbers: 140
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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