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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.

749291 puzzles downloaded.

7     9           3    
            6 10        
        4     2 11 1   10
      1   10 4   6 5 3  
  3         7         8
      6 2         12 8 9
2 6 12         3 10      
6         7         4  
  5 10 11   8 2   12      
4   7 12 10     9        
        11 1            
    4           2     12
Showing puzzle number: 287
Puzzletype: Symmetrical Sudoku
Startnumbers: 48
Difficulty: Very easy (0)
Solution methods: SiSo SC
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