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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.

190366 puzzles downloaded.

                15         10 7  
14     13               8     2  
        10   3     9       8    
            15                  
        6         5            
          3 2   9 4       7    
      15         11 10     12      
  14   12 9     11 8   13 1 4      
      6 8 4   10 13     5 2   3  
      11     6 13         8      
    4       9 2   3 14          
            14         15        
                  6            
    13       5     15   2        
  4     11               1     10
  2 3         6                
Showing puzzle number: 221
Puzzletype: Symmetrical Sudoku
Startnumbers: 62
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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