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Sudoku puzzles (Su Doku)

My database includes 6913752 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 9. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

129559096 puzzles downloaded.

    4            
7     2 1 4      
8     3 6 7      
  8 6       5 2  
  2 7   5   9 3  
  5 1       8 4  
      8 7 3     5
      1 9 2     8
            2    
Showing puzzle number: 4187519
Puzzletype: Symmetrical Sudoku
Startnumbers: 31
Difficulty: Very easy (0)
Solution methods: SiSo SC
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