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Sudoku puzzles (Su Doku)

My database includes 10934 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every 3x4 box contains the digits 1 through 12. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

2333808 puzzles downloaded.

            7 9     11 12
          1 8   6 3 10 2
      12                
    7 9   11 12 2 1 4    
8   10             9   5
12 6   4 7     5     3  
  12     6     8 7   2 9
6   3             12   4
    9 7 1 12 10   5 11    
                11      
7 9 12 10   2 1          
3 5     9 7            
Showing puzzle number: 7303
Puzzletype: Symmetrical Sudoku
Startnumbers: 56
Difficulty: Very easy (0)
Solution methods: SiSo SC
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