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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.

222411 puzzles downloaded.

    6 13       7     2 5 10 15   9
            15         1 8      
7         6     3   4          
    4             14         5  
      2 15     10         1      
                    3 8       6
                    12 2 13 16    
10       6     13       4 2 8    
    5 10 8       9     12       16
    13 3 9 2                    
1       11 13                    
      14         13     6 15      
  13         9             7    
          8   11     15         4
      15 12         16            
6   8 5 4 16     10       3 1    
Showing puzzle number: 186
Puzzletype: Symmetrical Sudoku
Startnumbers: 70
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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