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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.

355755 puzzles downloaded.

          1 15   16 13   10     6  
    11 4   9 1       8 7 5 13   3
  11 16     6 5 13 3   15 12 8   2  
16   10   14 2 3 5 13     4   1 11  
        6 11         9 5   2 12 4
      11 15   13 14 6   4     10 9 5
  15 8 14       16   3   9 13      
1   4     3 9 2 7 16 11     6 15 13
10 8 15     16 7 6 11 12 5     9   2
      16 1   2   9       3 12 10  
7 14 1     13   4 2 5   3 11      
2 7 9   8 15         12 16        
  10 2   3     12 14 7 1 13   8   16
  9   2 12 5   15 10 14 16     4 1  
6   7 10 4 14       11 13   2 5    
  13     11   10 1   4 2          
Showing puzzle number: 1488
Puzzletype: Symmetrical Sudoku
Startnumbers: 138
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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