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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.

  1   4                
12 6     1              
  10 5   11 3 2   1 8    
            1          
    1     5   6   2   11
3       9 4 11   7     1
9     1   11 12 3       7
10   4   3   9     12    
          8            
    8 10   1 5 2   11 7  
              7     1 12
                3   9  
Showing puzzle number: 159
Puzzletype: Symmetrical Sudoku
Startnumbers: 48
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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