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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.

368330 puzzles downloaded.

4 14     12   16   10   15   5 7   11
              14 13 7 12 1     5 3
8   12 13 3 7 2       11 14     10 6
  15   16 7 14   8 3   10 13 2      
3       16 12 15 2   8 9 6 1   7  
  11   9 8   12 13             16  
  16 5 1     10   6     7 3 14 2 13
16   10 4       7 5   13     12    
    7     8   11 1       14 2   16
2 10 3 12 14     6   15     16 11 13  
  3             14 4   16 7   15  
  8   2 6 3 9   7 10 16 5       12
      5 10 6   12 2   14 11 9   4  
5 1     2 15       11 7 9 10 13   14
11 4     1 9 6 10 15              
13   15 11   10   4   6   2     1 9
Showing puzzle number: 118
Puzzletype: Symmetrical Sudoku
Startnumbers: 136
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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