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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.

2333808 puzzles downloaded.

  12       9     11 6    
3 11     8       5     12
    6     7   2 4   1  
    1   12 2 11   10   4 9
        1   6     5    
      9               6
6               9      
    8     4   11        
7 3   11   5 8 12   4    
  8   6 4   2     10    
12     10       6     11 5
    9 2     5       7  
Showing puzzle number: 1767
Puzzletype: Symmetrical Sudoku
Startnumbers: 52
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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