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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.

337834 puzzles downloaded.

    15       13 1   10 8       16 5
  15 6   10 14   9   13 2 7   4 1  
15   14           2   5 16   9 3 12
3   12 13     16   1   7 2 14 5 15  
  5   3 2 16   12     6 14 7     10
16       7   3 14 4 15     12 10   13
  8     11           16 1 13 6   2
12     5   1   2         8   14 6
5 12   4         15   14   1     8
2   3 7 9 5           4     6  
11   1 2     12 10 6 4   13       16
1     14 15 3     7   13 12 10   8  
  6 10 16 1 8   5   3     2 12   9
6 3 5   4 13   7           2   15
  4 2   14 15 6   12   1 3   16 10  
4 10       9 11   8 16       14    
Showing puzzle number: 2548
Puzzletype: Symmetrical Sudoku
Startnumbers: 134
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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