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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.

350321 puzzles downloaded.

            7  
5     7   6   3
  3     1      
    4       1  
  2       3    
      3     5  
3   1   6     8
  5            
Showing puzzle number: 1577
Puzzletype: Symmetrical Sudoku
Startnumbers: 18
Difficulty: Super hard (153)
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