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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.

381882 puzzles downloaded.

13   9 4   14 11       6 2   12   10
  4 3 5     13 16       15 14      
11 12     2 13 4       7   16 1   5
14 3     6   1         7 15 16 13 9
8 1       16 7   6 5 4 12     2  
16   10       2 9 5   15 1     3  
  7   16   12     8 3   11     15 14
4   16 9 12       11 7           1
10           14 3       16 7 15   12
7 15     4   16 2     5   9   8  
  9     11 3   14 7 2       10   6
  13     3 15 8 5   10 9       7 16
12 2 1 15 16         9   4     5 7
15   12 7   5       14 13 3     6 11
      13 5       16 15     2 4 9  
6   14   13 7       1 16   12 2   4
Showing puzzle number: 584
Puzzletype: Symmetrical Sudoku
Startnumbers: 132
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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