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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.

702930 puzzles downloaded.

    10 8   9            
8 11           9       5
  3 1   5 11   6   2 9 10
10     11 4              
      3 9     10 8 1    
  8   4               2
4               5   12  
    9 2 10     3 6      
              11 3     7
1 5 3   11   6 8   7 10  
11       8           6 12
            10   1 6    
Showing puzzle number: 403
Puzzletype: Symmetrical Sudoku
Startnumbers: 52
Difficulty: Very easy (0)
Solution methods: SiSo SC
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