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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.

        3     12 8     7
  10       1 4 5        
              6 4 9 3  
  1   2                
  4                   5
    12 6 4         2   8
9   8         3 7 12    
10                   1  
                11   12  
  8 9 10 7              
        1 8 6       9  
7     4 12     10        
Showing puzzle number: 162
Puzzletype: Symmetrical Sudoku
Startnumbers: 42
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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