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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.

    10   11 15 3       9 8 12 14 16 2
  3   6 4 8   13 2 7 15   1 10    
10   4 16 1 9 6 2 13       7     14
1 12     10   9 14   16 4   6      
5 2 15   16   13 12     6 7 14     1
12   1 15     11             8 7  
        5   7 11     8   4      
  7   5 9 14     11   3   13 2   12
6   11 7   1   8     16 10 5   15  
      14   2     6 4   11        
  8 2             1     16 11   4
3     10 2 11     14 8   5   9 13 6
      2   6 4   9 12   14     1 16
9     3       15 12 11 10 4 8 6   5
    8 13   16 12 4 15   5 1 10   14  
8 1 5 4 7 3       6 14 12   13    
Showing puzzle number: 322
Puzzletype: Symmetrical Sudoku
Startnumbers: 136
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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