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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.

745866 puzzles downloaded.

    5       6   10   11  
              12   4   1
4   11     10   2 5   6 8
8   6         1       7
    3   9   4          
            8       10  
  10       7            
          2   9   8    
2       3         6   9
7 5   4 11   10     3   6
3   8   12              
  9   8   5       1    
Showing puzzle number: 508
Puzzletype: Symmetrical Sudoku
Startnumbers: 46
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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