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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.

1859325 puzzles downloaded.

  4   7           10   11
9 2 10             8    
    12     9   10     2  
        8   10 3   9    
2 3     9     5 4      
7       4   12 2 1     3
11     3 12 8   9       6
      12 2     4     5 1
    4   3 6   1        
  12     10   8     6    
    9             3 8 10
8   3           2   7  
Showing puzzle number: 3927
Puzzletype: Symmetrical Sudoku
Startnumbers: 54
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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