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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.

398994 puzzles downloaded.

8 5 16   7     10 15   13 9     2 1
      8   4 16   1   6 14   13 3  
  9   3     1 8 7 15 5 16       2
  6   16 3 2 5   4     11 12 1 9  
    8 7 9     2     14     15   11
            13   11 8     4   15  
3     1 10       8 4 9 6 7 16 11  
  4 11 13 2           12 3 6   5 16
13 14   2 1 16           5 15 7 8  
  15 12 9 8 3 2 13       1 16     14
  11   6     12 1   2            
7   13     5     6     12 2 14    
  3 1 14 15     12   6 4 8 9   16  
9       12 6 15 11 14 13     8   7  
  8 3   5 10   6   11 16   13      
14 10     4 8   7 16     13   12 6 15
Showing puzzle number: 804
Puzzletype: Symmetrical Sudoku
Startnumbers: 136
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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