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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.

4   11 1     3     7 10  
  10     5     4 9      
        7 10 9          
3     6       12 8 2   9
          4     1      
  7           2        
        6           3  
      9     4          
1   10 8 2       4     5
          3 10 1        
      11 1     5     2  
  3 1     5     12 10   8
Showing puzzle number: 478
Puzzletype: Symmetrical Sudoku
Startnumbers: 46
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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