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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.

368426 puzzles downloaded.

3   1       6   4
      9   4 1    
  4              
    8            
        4        
            3    
              5  
    4 2   6      
9   3       4   7
Showing puzzle number: 13853
Puzzletype: Symmetrical Sudoku
Startnumbers: 19
Difficulty: Very hard (0)
Solution methods: SiSo SC SB DS FI
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