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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.

318964 puzzles downloaded.

1 10   3 15   7           5 4 6 9
5 15 10 16     4         8   13 11 6
    7 2   3 14 4       5 10     13
            10   16       2 7    
  3       6       7 11 10 1   12 4
  1 11     12   5 2 6 15 9   16 13  
6 12     2 16 5   3 14 10   15     11
3 6   10 9 4         14     1    
    8     9         12 16 3   2 15
14     5   7 3 6   9 16 12     4 8
  9 12   7 1 11 13 15   8     5 3  
12 5   1 14 11 16       7       8  
    9 7       15   11            
7     9 10       8 16 3   11 14    
9 14 4   5         1     7 2 16 12
15 11 1 6           10   13 16   7 2
Showing puzzle number: 2805
Puzzletype: Symmetrical Sudoku
Startnumbers: 130
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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