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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.

303861 puzzles downloaded.

  6   8 15   7 13   12   9     5 16
4 14         13 3   11 15   7   16 12
  15     4 7 8 2   9 3 6 1      
  3   14   5 6 12     7   13 1    
5     15 11     1 8 10 16          
15   9   6 14 12 5 1   10     16   3
16   5 4 8     7           12    
  9 7 3   13 4     6       8 15  
  7 1       14     15 8   3 4 10  
    2           10     15 6 7   1
2   15     1   9 11 8 4 13   10   14
          3 1 10 6     14 12     15
    11 2   6     7 16 12   4   8  
      9 3 11 2   13 7 14 1     6  
9 16   10   8 3   2 5         4 6
13 8     10   15   3 1   4 2   7  
Showing puzzle number: 1820
Puzzletype: Symmetrical Sudoku
Startnumbers: 132
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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