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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.

351830 puzzles downloaded.

  15   7     8         3 12 4 13  
14 2       12 15 6     4         5
    14   8   6 10 2   13 5 1 12   16
  8 4   2 10 13   1   3   15      
  3       7 1   9     16 14 8 5 12
6     5 14 13   2 8           10 7
  6 10 8   11   13 4   5   2 16 12  
    7 15 1 2   9       12 11      
      2 4       13   16 11 5 10    
  10 5 9   8   16 14   1   3 13 11  
1 9           14 3   2 8 13     6
7 5 16 13 3     8   2 15       6  
      3   15   4   1 11 14   6 2  
16   11 6 13 4   1 12 14   15   5    
10         14     11 5 8       1 2
  14 12 1 16         13     10   3  
Showing puzzle number: 471
Puzzletype: Symmetrical Sudoku
Startnumbers: 132
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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