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Sudoku puzzles irregular (Su Doku)

My database includes 1031 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 12. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

691708 puzzles downloaded.

  5 9   12   6 11        
        8     7 4   3  
          8   5     9 1
3 7     10 5     12 1   11
      12     2       5  
6           1          
          9           8
  8       11     6      
5   3 8     11 6     4 10
9 4     5   10          
  9   11 6     10        
        4 3   1   7 8  
Showing puzzle number: 611
Puzzletype: Symmetrical Sudoku
Startnumbers: 50
Difficulty: Very easy (0)
Solution methods: SiSo SC
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