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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.

1505943 puzzles downloaded.

      12   3   6     9  
3         7 1     5    
2       8     9     3  
  12 10 6       1   11   5
    11   7   5   8      
    1 5   11     6      
      10     2   1 12    
      11   10   3   8    
7   4   1       10 3 11  
  10     5     4       8
    8     12 11         7
  6     3   7   12      
Showing puzzle number: 516
Puzzletype: Symmetrical Sudoku
Startnumbers: 52
Difficulty: Very easy (0)
Solution methods: SiSo SC
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