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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.

2190022 puzzles downloaded.

12 6         4       5 2
      11   2 5   4      
  5   4 1     12 10 3   7
      5 2 1 11 9   7    
            3     2    
2               8 9 1  
  3 6 2               4
    9     12            
    12   4 9 10 3 2      
3   5 8 7     6 11   10  
      6   5 9   7      
11 9       10         6 12
Showing puzzle number: 1222
Puzzletype: Symmetrical Sudoku
Startnumbers: 56
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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