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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.

  10 2   12 7     8   3 5
    1     3   8 11   12  
4                 6    
        4       9     12
          12       5 8 11
    12   3 8 11 7        
        11 5 6 4   1    
8 11 7       3          
1     4       2        
    5                 9
  8   1 2   5     3    
3 9   11     8 6   12 4  
Showing puzzle number: 8928
Puzzletype: Symmetrical Sudoku
Startnumbers: 52
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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