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Sudoku puzzles (Su Doku)

My database includes 936 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 9. 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.

190976 puzzles downloaded.

        2        
                 
  8     1   3    
        4 7      
                 
      1 3        
    9   8     1  
                 
        5        
Showing puzzle number: 518
Puzzletype: Symmetrical Sudoku
Startnumbers: 12
Difficulty: Very hard (0)
Solution methods: SiSo SC SB NS
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