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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.

16   2 8 9 10   6   3       14 11 7
      16 15       7 8         12 9
7 3   10 4 9   12 16       14 15 6  
    13   11   16   4 6 12       9 5
  14 1     8   13 15   16   9 7    
  12 11   5 2   9         13 6    
    4 14 10 11   7   12   2 1     13
10 8   12       2 6 13 11 16        
        3 16 7 14 1       15   4 8
5     6 16   15   8   4 1 2 12    
    14 13         5   3 9   10 7  
    7 4   12   15 11   6     8 5  
8 16       15 9 1   2   5   4    
  5 16 9       4 10   1 14 11   8 15
4 6         1 11       7 3      
2 11 15       8   3   7 13 10 9   1
Showing puzzle number: 2724
Puzzletype: Symmetrical Sudoku
Startnumbers: 132
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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