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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.

187691 puzzles downloaded.

9 11         14           5     10
        4 12 10               7  
  1   10 9         11         6  
      8     13                  
      3 1             13        
14           12 4                
  8 2     10             7 9    
      1   14     3   15       16  
  13       5   3     2   10      
    8 5             7     11 14  
                1 6           2
        10             9 16      
                  9     12      
  4         15         12 8   3  
  12               15 4 11        
8     7           3         15 4
Showing puzzle number: 140
Puzzletype: Symmetrical Sudoku
Startnumbers: 64
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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