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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.

315812 puzzles downloaded.

12 4 5   9   15 14   16 13 1        
9 5 6       13         8 14 3   1
16   11     1 4 9   12 15 10       7
3       8       9 2     16 1 7  
  15   7   4 9 6   8       14    
  12 1   11 10   7 3       5 9    
10       14 8   16 12   1 15 7 5   11
    15   2 16         10   4 11 5 14
2 3 14 6   7         8 9   10    
8   2 14 6 9   13 15   3 7       16
    16 1       8 5   7 3   6 15  
    4       12   8 1 6   13   2  
  10 7 3     6 1       2       5
15       5 6 14   13 4 2     7   3
6   9 11 4         14       15 13 2
        1 5 8   6 7   4   2 14 9
Showing puzzle number: 1967
Puzzletype: Symmetrical Sudoku
Startnumbers: 132
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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