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Sudoku puzzles (Su Doku)

My database includes 17735 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.

277866 puzzles downloaded.

2       8        
          1 8    
  9   4          
    3 9          
        1        
          6 7    
          7   6  
    8 1          
        6       3
Showing puzzle number: 11904
Puzzletype: Symmetrical Sudoku
Startnumbers: 17
Difficulty: Very hard (0)
Solution methods: SiSo SC SB NS FI
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