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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.

1859230 puzzles downloaded.

          12 1       7  
      8 9         6   11
10   12   3     7     5  
      5   7       12 10  
9 4 1   5   12   7     2
        4   2 1       5
5       6 1   3        
11     1   10   4   9 8 7
  2 6       11   3      
  5     12     8   7   10
3   8         2 9      
  7       3 9          
Showing puzzle number: 4867
Puzzletype: Symmetrical Sudoku
Startnumbers: 54
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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