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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.

325666 puzzles downloaded.

16   15 8     7 4     9     14   2
  16   6   4   1 7 14   9 15 8 10  
      4     5 12 16       6   3 10
9 10   3 5   8 6 2       7 12   15
1 5 10 2 13           8       15 3
10 6 16     5 14 3       11   15    
3 11   15 14   13 7   1 16 8 2   5  
15 8 14     11   16       10 4 2 7  
  15 1 10 3       12   14     9 4 7
  13   7 9 16 10   8 4   1 12   2 14
    8   1       14 2 5     16 9 13
6 3       13           2 9 4 12 8
13   3 5       14 15 6   4 10   8 1
14 12   9       2 6 15     5      
  4 12 1 7   16 8 13   6   11   14  
7   2     14     3 10     8 1   6
Showing puzzle number: 2366
Puzzletype: Symmetrical Sudoku
Startnumbers: 142
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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