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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.

1650385 puzzles downloaded.

    11     7           10
6 1     10     3   4    
    3 7         6 1    
  4 9   1   6   7     11
        12   11     10 2  
  12   6 8              
              12 3   9  
  9 4     5   2        
8     3   1   4   11 7  
    5 10         4 2    
    1   4     11     12 3
4           1     6    
Showing puzzle number: 10216
Puzzletype: Symmetrical Sudoku
Startnumbers: 50
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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