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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.

492510 puzzles downloaded.

6           3         11
    9             10 2 6
              9 5 1    
      2         4   9 1
    6     1           10
        6 11 10   9   4  
  12   9   10 8 7        
2           6     7    
1 7   8         10      
    7 5 2              
3 6 2             12    
10         3           9
Showing puzzle number: 488
Puzzletype: Symmetrical Sudoku
Startnumbers: 44
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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