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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.

404194 puzzles downloaded.

1 8 9   2       6       11 14   5
14 13 10 7 8 1 2 6 11 15       12    
  2 7       6 11   5       9 15 13
11             2 3 8 15   9 7   12
  9 14   5 11   16     3 7       10
    12     10 3 9     8   1     4
  1     14 8 16 15 9 11 7         6
6   5 14     4   2 9 10 16        
        13 14 8 10   6     5 11   15
4         2 12 7 5 1 14 13     10  
13     1   5     8 12 11     4    
16       3 12     15   13 1   8 6  
10   2 15   6 13 1 16             3
7 11 1       10   14 3       6 8  
    3       7 12 4 10 6 14 2 15 11 16
15   8 12       3       6   1 2 14
Showing puzzle number: 671
Puzzletype: Symmetrical Sudoku
Startnumbers: 134
Difficulty: Very easy (0)
Solution methods: SiSo SC
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