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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.

472037 puzzles downloaded.

  3       2     6   8  
                  10 3 7
4   6 12   1 9     5    
  9       4       6   11
        7     6        
  10   9     4   5   6  
  6   11   10     7   12  
        5     8        
3   2       10       7  
    12     6 1   10 3   4
6 1 5                  
  4   5     6       10  
Showing puzzle number: 631
Puzzletype: Symmetrical Sudoku
Startnumbers: 48
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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