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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.

2244240 puzzles downloaded.

3 11 5 12   1   8       7
        3     5   4    
      9   12     3   1  
9   12         2        
  6 4       12   10 1 9  
11     7         2   5 6
6 3   10         4     5
  2 9 8   6       11 12  
        11         9   3
  1   3     2   5      
    8   5     3        
12       4   8   7 3 11 1
Showing puzzle number: 6773
Puzzletype: Symmetrical Sudoku
Startnumbers: 56
Difficulty: Super easy (0)
Solution methods: SiSo
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