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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.

274925 puzzles downloaded.

    4   5 14 13   12       8 10 7  
12     7       6 11     13 3 15 10 4
5     3 16         2 11   13   8 1
  10 14 13 2   3   1 7 8   9 11   16
    9   4     14     15   7 13    
    2     12 4 16 3   9 10 6   14 11
7   1       2   8   5       9  
  8 11 2 14   15 10   5 12         6
11         4 1   9 8   5 14 7 16  
  6       2   9   12       16   10
16 11   5 15 6   1 14 10 4     2    
    15 14   8     16     11   1    
9   3 16   13 10 5   14   8 11 4 15  
10 4   12   15 8         16 1     7
3 14 10 1 13     8 15       16     2
  16 8 10       2   9 7 14   3    
Showing puzzle number: 2815
Puzzletype: Symmetrical Sudoku
Startnumbers: 134
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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