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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.

  4 3 9   1 8       5  
          12 3          
  7 1         4   8 3  
  6               10   7
4       5 6     1   8  
7             8        
        9             2
  2   10     5 11       1
12   8               11  
  11 12   8         2 10  
          7 9          
  5       3 1   6 9 7  
Showing puzzle number: 817
Puzzletype: Symmetrical Sudoku
Startnumbers: 46
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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