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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.

1417121 puzzles downloaded.

  4     7 3 8 11 12      
        1       8 11 4  
      11   12   4   6   9
  8   6     12 5        
1         10         6 5
      2 9 6     3      
      8     11 10 5      
12 5         9         4
        5 2     6   12  
8   3   11   7   4      
  7 10 9       1        
      4 3 8 10 9     2  
Showing puzzle number: 9290
Puzzletype: Symmetrical Sudoku
Startnumbers: 54
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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