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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.

1360223 puzzles downloaded.

  7           11   4   1
      2       10   11    
        8 5 7 4       12
4 3     12 6 1   10      
6   11   2       3 5    
  12           3 6      
      12 3           2  
    3 10       9   1   8
      7   8 11 2     4 6
11       1 10 2 12        
    8   5       2      
12   5   4           3  
Showing puzzle number: 1173
Puzzletype: Symmetrical Sudoku
Startnumbers: 52
Difficulty: Very easy (0)
Solution methods: SiSo SC
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