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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.

307945 puzzles downloaded.

      13 14 16 10 7 8              
    4 9 1   2 12   14   16   3 6  
    16 12   1 7 3     10   14 8 11 15
12 14     7   3       16     4 5  
2             10 5 6   12 4 13   3
5 10 9 1   14       8 13   6 16    
1 8     13       4 3     11 15 14 2
    15   6 11 8   16 1   14   9 13  
  6 10   3   11 14   13 2 9   7    
16 15 13 3     5 2       7     4 14
    1 10   13 4       12   7 6 2 9
9   6 5 15   13 16 12             8
  4 5     8       12   13     3 10
10 5 14 2   4     6 7 15   9 1    
  13 7   10   16   11 4   15 8 5    
              4 15 9 11 10 13      
Showing puzzle number: 862
Puzzletype: Symmetrical Sudoku
Startnumbers: 134
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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