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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.

1605446 puzzles downloaded.

  11 5       4 6     3 8
8 12   9     5   6      
          7       11 1 2
                4   9  
7 9   6       1   2    
10   1 11 4           12  
  7           5 8 9   3
    6   10       7   2 4
  8   5                
4 10 8       12          
      2   11     12   8 9
11 6     3 2       7 4  
Showing puzzle number: 3299
Puzzletype: Symmetrical Sudoku
Startnumbers: 54
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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