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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.

12 1             4      
  2           8       1
                  9   5
      1 9 11 12   6   4  
4   3           5   11  
        10   11 1        
        5 3   12        
  11   12           4   2
  4   2   12 10 6 7      
1   2                  
10       8           5  
      5             12 9
Showing puzzle number: 128
Puzzletype: Symmetrical Sudoku
Startnumbers: 42
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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