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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.

366927 puzzles downloaded.

        15 12 1 8       11   14 9 2
10 15 16   2 7       6   3     13  
6     13 4 15 9   12 8 1       7  
11 8 14 1 7 10   9     3   15 5    
8 11 7     9   16 1 5 10 6     15 4
              15 6 1 11   2 8 5  
7 6         15   5 12   14 11 9   10
      16             2     13 11 9
3 1 5     6             7      
12   9 4 3   16 10   15         6 11
  5 1 14   13 7 12 15              
14 16     10 8 12 1 13   5     4 2 3
    12 3   14     11   8 4 9 7 1 16
  9       1 5 11   10 7 16 12     6
  13     8   4       15 12   10 14 1
1 14 3   13       16 4 6 9        
Showing puzzle number: 50
Puzzletype: Symmetrical Sudoku
Startnumbers: 134
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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