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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.

273194 puzzles downloaded.

4     12 13         9 10 16 7 8    
  14 4 15   13   2 6   16 7     12  
  6 3 2 15     5   1 14 9 11 10   7
    2 1 14   9 8 16 6   4   12    
3     9   5   4 14   8   15   13 6
7 5   3         11 10     6   9  
        11 4   10   3   14     5  
  1 6 4 10     11   8 7   9   16 14
13 9   11   8 1   2     6 5 3 14  
  16     9   3   10   5 8        
  10   8     11 3         2   1 13
12 3   14   15   1 9   2   4     11
    11   4   6 16 12 13   2 10 14    
14   10 5 3 6 8   1     12 13 16 15  
  7     5 11   14 13   1   8 6 4  
    9 13 1 7 2         11 16     4
Showing puzzle number: 2835
Puzzletype: Symmetrical Sudoku
Startnumbers: 138
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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