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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.

373940 puzzles downloaded.

4 5   8       6  
      9       8  
  1     2        
3                
    4       8    
                7
        9     1  
  4       5      
  2       6   7 5
Showing puzzle number: 11157
Puzzletype: Symmetrical Sudoku
Startnumbers: 20
Difficulty: Very hard (0)
Solution methods: SiSo SC SB SF FI
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