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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.

315180 puzzles downloaded.

6     2       3
5         6 7  
              1
8 2       7    
    7       2 6
1              
  3 8         2
2       4     7
Showing puzzle number: 87
Puzzletype: Symmetrical Sudoku
Startnumbers: 20
Difficulty: Super hard (442)
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