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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.

458486 puzzles downloaded.

    9   8   7     10    
    1 11   7   6       9
          2   1        
    8     3   9   6    
  9   10             1  
    11 7 12           9  
  5           7 2 12    
  3             6   2  
    3   7   8     9    
        6   1          
5       9   4   7 3    
    12     11   8   5    
Showing puzzle number: 525
Puzzletype: Symmetrical Sudoku
Startnumbers: 44
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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