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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.

  8   1       10        
          3         7 4
  4   7   9     8 3   2
  11     7     9   2 6 12
            8 5   1    
12     5       6 11      
      6 1       10     8
    4   10 11            
9 3 10   2     8     5  
11   8 2     6   12   3  
3 6         11          
        12       1   2  
Showing puzzle number: 1391
Puzzletype: Symmetrical Sudoku
Startnumbers: 50
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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