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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.

1314994 puzzles downloaded.

  5 9         4     6 7
      4 7 11 8   10      
8   2         3   1    
  8 11 7 3 2     12      
    5     10       9    
  9         12 6 2      
      1 4 9         5  
    10       5     4    
      9     11 1 3 7 2  
    6   9         5   11
      2   5 4 11 9      
9 11     12         10 3  
Showing puzzle number: 3951
Puzzletype: Symmetrical Sudoku
Startnumbers: 54
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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