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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.

261120 puzzles downloaded.

      1        
  6 5     4 8  
    8 7        
5       3      
      6       3
        6 7    
  3 1     8 5  
        5      
Showing puzzle number: 137
Puzzletype: Symmetrical Sudoku
Startnumbers: 18
Difficulty: Very hard (0)
Solution methods: SiSo SC SB NS FI
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