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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.

368456 puzzles downloaded.

3 1   13       10     7   15   11  
6 11 8 2   15 3 5     12 4 9     10
16 9   8 2 1 14   15       12   13 11
    14 1 10     13 3       4     15
13 16 2       11       15 10 3 5 7 9
  6   10 15 16   11           4    
5 3       8 15   11   9 12   2 6  
15       14 7 9     12   16 5     8
11     15 4   8     13 1 9       5
  7 12   8 4   1   6 16       3 13
    5           1   8 6 11   15  
12 10 4 7 5 11       15       6 14 1
8     12       2 4     3 16 1    
7 4   5       3   11 14 2 13   9 12
9     3 6 14     7 4 11   10 13 8 2
  8   6   5     13       1   12 7
Showing puzzle number: 376
Puzzletype: Symmetrical Sudoku
Startnumbers: 136
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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