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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.

368525 puzzles downloaded.

13 2               4   15 10 3 7 14
  16 7 1     2         14 4 8   13
5       16   4     13 8 1 3 6    
  1   3   8   10 13   7 12   15 16 11
15 5   16 4       8 12 13   14   10 7
3   15     4   8 1 11         14  
  13 16 14   11       2 10 9 8   1 6
    2 8     13 7 3 15 6     1 12 10
8 12 3     10 16 4 11 14     1 5    
1 3   9 13 6 15       11   12 10 4  
  8         11 3 16   15     12   4
16 6   4   12 9 13       7 15   11 8
9 4 11   14 2   15 12   5   16   3  
    4 15 5 14 7     16   3       2
7   13 6 12         1     11 14 5  
2 15 8 5 7   12               9 16
Showing puzzle number: 2673
Puzzletype: Symmetrical Sudoku
Startnumbers: 142
Difficulty: Very hard (0)
Solution methods: SiSo SC DC XW SF
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