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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.

1151692 puzzles downloaded.

      1       5 11 12   2
  12 3 7     6       5  
    5     7 2         3
    7           10     5
  2         3 6        
  10 11 9   8   2        
        11   9   5 1 10  
        1 12         4  
5     6           9    
12         1 7     4    
  4       5     7 10 12  
7   6 2 12       1      
Showing puzzle number: 10453
Puzzletype: Symmetrical Sudoku
Startnumbers: 50
Difficulty: Very easy (0)
Solution methods: SiSo SC
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