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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.

404194 puzzles downloaded.

    5 11   16       15 7 12 4   13 9
7 13 6 8   9   5 11   1   16   10  
5     7 8 2 1         10   3 15  
16   11       13   15 9 3     4   14
10 7 2 13     14 6 12     5 11   1  
  11 7 12 2       8 1 4   5      
      9   1 2         14   5   6
    1   6 13 3 14         2 12 9  
  4 10 14         1 12 11 15   2    
11   3   16         2 6   15      
      16   11 5 4       8 14 13 12  
  10   4 7     16 2 3     1 11 5 15
2   13     7 6 10   4       9   11
  14 16   9         13 2 3 6     5
  1   2   5   12 4   14   9 8 16 7
13 3   10 14 15 4       5   7 1    
Showing puzzle number: 363
Puzzletype: Symmetrical Sudoku
Startnumbers: 134
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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