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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.

303151 puzzles downloaded.

  8 4   7 3    
  3 2   5      
5         6    
    3          
          8    
    5         4
      4   2 1  
    8 1   5 7  
Showing puzzle number: 86
Puzzletype: Symmetrical Sudoku
Startnumbers: 20
Difficulty: Very hard (0)
Solution methods: SiSo SC SB DS DC XW NS
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