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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.

303875 puzzles downloaded.

7 15 10   2         14 16 1     4  
5 9     12 4 3   8   6         2
    14   6 1   5 9 12     11 10 13  
9   8 16 4 2       5 12       10 3
    7 15 10 3 8 4   1       11 16  
      1 16   5 14         9 3    
  1 15 4   10 7         16 13 6 9 11
  12     1   15     10 9     7   14
15   2     8 10     16   6     12  
1 16 4 13 9         11 8   7 5 15  
    5 8         1 7   4 14      
  5 16       4   14 8 3 11 2 12    
12 3       16 6       2 7 1 8   5
  11 1 5     2 8 16   4 14   9    
3         13   6   9 5 12     7 15
  13     15 14 9         2   1 5 16
Showing puzzle number: 534
Puzzletype: Symmetrical Sudoku
Startnumbers: 132
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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