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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.

375011 puzzles downloaded.

14     1     9 5   10   6     16 13
10       7 6   11     8 4 13 3   12
9 6 7     2 14   16 5   1        
  9 13 15   7 10     11 3          
    8   9 16 5     14   11 12   13 7
  13   5 8 11   3 6       16   14  
  7   16       15   6   13   5 12  
6       4 9 12 7 15     2 5 16 3 1
12 5 1 4 14     2 13 16 6 15       11
  3 6   12   7   14       11   4  
  15   12       8 2   1 7 14   10  
16 1   13 10   2     3 11 9   12    
          8 6     7 9   10 1 11  
        11   13 10   15 4     14 9 6
3   10 9 13 4     11   14 8       5
5 14     2   15   7 12     1     4
Showing puzzle number: 686
Puzzletype: Symmetrical Sudoku
Startnumbers: 134
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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