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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.

558603 puzzles downloaded.

11     8   10     2      
  2 1   9             4
9   7 2 5 3 11     8   1
            8     9    
        1     11       6
      10   6   7        
        8   6   5      
4       11     3        
    3     4            
2   12     11 1 8 3 4   10
1             2   7 9  
      5     7   1     3
Showing puzzle number: 122
Puzzletype: Symmetrical Sudoku
Startnumbers: 48
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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