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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.

1844246 puzzles downloaded.

1 10 2 5 9       4     11
3   8     4 1          
9       5         6    
        3 8 7          
12     11       1     9  
7 1 4       9 2 10   6  
  5   7 8 11       1 3 2
  11     1       12     8
          10 3 9        
    6         8       3
          1 5     8   4
8     10       3 5 12 2 1
Showing puzzle number: 4456
Puzzletype: Symmetrical Sudoku
Startnumbers: 56
Difficulty: Very easy (0)
Solution methods: SiSo SC
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