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Sudoku puzzles irregular (Su Doku)

My database includes 18345 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. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

            3    
  1 9       5 3 4
      6   2 9 1  
      1   6     9
  8   9   1   2  
4     5   9      
  5 8 4   7      
9 2 6       8 5  
    2            
Showing puzzle number: 16728
Puzzletype: Symmetrical Sudoku
Startnumbers: 30
Difficulty: Super easy (0)
Solution methods: SiSo
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