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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.

1139562 puzzles downloaded.

      3       2 9 1    
6     4   7       5 3  
  2 12   3         4    
3 7       1 11         9
  5 11         6   8    
9             3   11 6 1
8 10 7   12             2
    4   1         12 10  
11         8 4       9 5
    3         12   7 5  
  1 10       2   12     6
    8 12 5       10      
Showing puzzle number: 5355
Puzzletype: Symmetrical Sudoku
Startnumbers: 54
Difficulty: Very easy (0)
Solution methods: SiSo SC
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