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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.

  15     12   6 4           7 16 8
5   15   16   10 6 12 8     2     9
        7 16       14 15 9 11   3 2
      10   12 16 9 5 7     8     14
10   16     5     14     15 1 12 9 13
        2 1   3 10 15   16   8 7 5
13   4   8 9 12 16     2       6  
    9         10   12 5 3 16   13  
  12   14 13 15 11   8         10    
  7       3     2 11 12 5   15   4
15 13 2   1   9 8 6   11 14        
7 5 13 6 4     12     10     2   11
8     5     2 13 4 3 6   15      
16 1   2 3 7 13       8 11        
12     9     1 2 15 4   8   11   16
3 8 11           1 13   10     15  
Showing puzzle number: 2677
Puzzletype: Symmetrical Sudoku
Startnumbers: 130
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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