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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.

756740 puzzles downloaded.

12   11           3 1 4  
  3   2     10   6      
      12 8 1   7   9   3
                    7  
10 1 3           4      
2 5   4   9            
            9   2   10 12
      6           4 1 2
  12                    
3   6   1   4 2 9      
      8   11     7   3  
  8 4 9           5   11
Showing puzzle number: 316
Puzzletype: Symmetrical Sudoku
Startnumbers: 48
Difficulty: Very easy (0)
Solution methods: SiSo SC
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