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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.

401250 puzzles downloaded.

4 9       5     8 14 3          
3   5             12 6     7 2 1
15 13     12 1     3   2   6 4   9
14 11     16   4 1 7 8     3 12 9  
  12   13       2     11   8 6 10 3
  5 10   4   9   13   1 16   2    
16 4   7 15       2   10   13 1 11  
6     2 14 7 1 9 15       4 3    
    1 5       16 9 2 14 7 15     4
  10 15 12   6   5       2 16   8 11
    2   9 15   13   1   4   8 14  
5 2 11 3   12     4       14   6  
  8 4 6     12 11 16 9   10     15 14
2   9 4   11   14     13 6     5 15
11 7 8     16 3             13   2
          13 15 12     4       7 6
Showing puzzle number: 1219
Puzzletype: Symmetrical Sudoku
Startnumbers: 132
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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