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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.

4   16   5       11   3 7     8  
9   1 3 14       10           13 15
11   15       6   5   13 3 2   9  
2 6     15 7 13   9   11     16   8
6     11 2 1 4 13   16   9 7 8 12  
    14 13   8 10 4 16 9 1 15       7
      5   14       7   8 11 9 1  
      2 4       12 1 14     5 11  
  14 9     15 2 10       12 5      
  12 4 1 10   15       16   6      
3       12 5 1 9 2 11 4   15 14    
  7 8 10 11   3   6 15 12 5 16     14
12   10     11   2   8 15 14     16 5
  16   4 13 12   14   5       2   3
10 11           15       16 14 3   6
  4     9 3   16       11   6   12
Showing puzzle number: 2211
Puzzletype: Symmetrical Sudoku
Startnumbers: 132
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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