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Sudoku puzzles (Su Doku)

My database includes 242 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every box contains the digits 1 through 16. The grey boxes is even numbers and the white boxes is odd. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

184530 puzzles downloaded.

    13 11     8   4         15    
        7               13   4  
6           4 3 5 14           1
      8   14     7 15            
    14   2           8         6
10               1 5   3       4
    16       14 4     10   1 5    
      5       12       4       11
11       10       12       3      
    12 3   4     16 8       13    
7       6   9 15               5
5         1           13   9    
            15 5     6   14      
14           7 9 3 4           2
  2   4               14        
    6         8   13     15 4    
Showing puzzle number: 138
Puzzletype: Symmetrical Sudoku
Startnumbers: 74
Difficulty: Super easy (0)
Solution methods: SiSo
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