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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.

373970 puzzles downloaded.

11 3       7 13   8   5 14 12     2
  1     8 16 10   11   7 4     3 5
12 11   1   2       6 14 5 3 9 7 10
    4 2 7   16   6       9 14 10  
      3     11 2 7 8 12 9        
  4 2     6 14 12     10 16 8      
    15 11       3 13 2 4       16  
16   5 12 14 8   15 10   6 11   2   13
13   16   11 10   7 14   1 3 4 6   12
  6       13 15 8 12       11 4    
      13 5 1     9 16 3     12 11  
        13 15 3 11 5 14     16      
  10 1 4       16   13   12 6 3    
5 12 7 8 15 4 6       13   2   1 3
6 16     12 3   9   10 8 7     2  
14     6 3 11   4   5 16       12 15
Showing puzzle number: 560
Puzzletype: Symmetrical Sudoku
Startnumbers: 140
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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