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Sudoku puzzles irregular (Su Doku)

My database includes 2782 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 8. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

277765 puzzles downloaded.

      2 7     1
2       3      
  3 6     1    
          8 6  
  7 5          
    8     4 3  
      6       4
3     1 5      
Showing puzzle number: 831
Puzzletype: Symmetrical Sudoku
Startnumbers: 20
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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