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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.

744783 puzzles downloaded.

  4       2         10 12
  12   10       9   11    
        6         9 5  
            7 10       8
      6 4   12   11 2 9  
          7     1   6  
  2   8     4          
  10 8 3   4   6 9      
4       8 11            
  3 2         5        
    9   5       7   8  
10 1         11       3  
Showing puzzle number: 662
Puzzletype: Symmetrical Sudoku
Startnumbers: 46
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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