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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.

1 10 16 3       4 8 9   12     7  
12 11   14 4 10   15   13 1     16    
9     16   7   6     8   4 14 12 11
          14 13 12   15 3   8 2    
  2 8 1 6 12 16   5   9       14 15
  14         1 10 12 11     6      
  1 15 6 3       7       5 8 10 12
5     9   13   11   6 15 3 14   16  
  7   5 15 11 2   1   14   16     13
16 4 7 12       14       5 9 10 8  
      13     5 8 4 16         9  
6 3       9   2   8 10 14 13 1 4  
    10 11   3 7   14 1 13          
14 6 9 8   16     10   7   1     2
    12     6 14   3   4 11 7   2 9
  8     14   9 1 11       2 13 15 16
Showing puzzle number: 103
Puzzletype: Symmetrical Sudoku
Startnumbers: 136
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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