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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.

689459 puzzles downloaded.

    11 2 9   12 1        
1   7 3   4 2 5       6
  9     11           12 5
                  3   11
  7         3 8 12      
                       
                       
      4 8 9         7  
5   2                  
9 1           3     5  
12       1 6 9   5 11   2
        12 8   11 2 6    
Showing puzzle number: 161
Puzzletype: Symmetrical Sudoku
Startnumbers: 44
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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