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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.

756740 puzzles downloaded.

              8       5
  5         10          
    6   2   9       4 8
  3   9 5 11            
3 2               6    
  11 10 6       3   5    
    5   8       4 9 12  
    9               7 3
            2 12 10   11  
1 12       4   11   7    
          10         2  
11       1              
Showing puzzle number: 828
Puzzletype: Symmetrical Sudoku
Startnumbers: 42
Difficulty: Very easy (0)
Solution methods: SiSo SC
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