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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.

721812 puzzles downloaded.

12 11   7       6        
    3           5   1 6
          12   4   2    
    2     7            
5   4     10 7       11  
  6 9   2             5
3             1   9 7  
  9       5 10     1   4
            5     8    
    11   12   9          
10 12   2           11    
        5       2   6 9
Showing puzzle number: 738
Puzzletype: Symmetrical Sudoku
Startnumbers: 44
Difficulty: Harder (0)
Solution methods: SiSo SC SB DC XW
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