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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     9           2
  9   3     10 1   8 7 5
        5 1            
    10 8     3 9     12  
    1     8 11     6    
9 6     3       2      
      7       8     6 9
    8     11 4     1    
  12     2 10     8 3    
            9 6        
11 1 3   9 12     10   5  
5           1     7 2  
Showing puzzle number: 472
Puzzletype: Symmetrical Sudoku
Startnumbers: 52
Difficulty: Super easy (0)
Solution methods: SiSo
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