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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.

1708422 puzzles downloaded.

        3   5 9   8    
  6     4     1   9 2  
9 5   12 7       4   10 11
1     4             5 10
  7                    
10 12   5   6 1   7     3
5     10   3 2   9   4 12
                    1  
4 1             5     8
6 11   7       12 8   3 4
  9 4   10     2     12  
    5   8 11   4        
Showing puzzle number: 5224
Puzzletype: Symmetrical Sudoku
Startnumbers: 56
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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