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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.

2195849 puzzles downloaded.

    11 12       7   8    
4         11         6 10
  7     3   9   4 1    
                10      
12       9   8 4   11   6
11 2   1     5 10   3 7  
  11 10   6 2     5   9 8
2   9   7 10   5       12
      6                
    12 11   4   1     2  
7 10         3         1
    1   10       11 6    
Showing puzzle number: 9487
Puzzletype: Symmetrical Sudoku
Startnumbers: 54
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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