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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.

2317931 puzzles downloaded.

          11 6 5       2
  2   1 4   7         11
3 11 5 4     1   6      
2   8       11 3 4 12    
  10               5    
    7       10   9     8
5     3   10       9    
    11               3  
    12 6 8 3       11   7
      11   2     12 1 6 5
7         1   10 11   2  
12       5 6 4          
Showing puzzle number: 2224
Puzzletype: Symmetrical Sudoku
Startnumbers: 54
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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