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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.

1766802 puzzles downloaded.

    8 3   7            
2     7   8 9 12 1      
9   1     3 6     4   7
5 2         1   7   12  
    7 11     2   3 6    
                    5 9
3 11                    
    5 1   10     6 8    
  4   6   1         3 12
8   12     11 7     5   1
      4 1 5 8   2     6
            12   4 7    
Showing puzzle number: 9713
Puzzletype: Symmetrical Sudoku
Startnumbers: 54
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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