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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.

1464531 puzzles downloaded.

      9     12          
  11     4   9       8 6
      1 8     11 9 5 10  
7   12   6           4 3
  8 3     2 7       6  
          11     2   1  
  5   3     11          
  7       4 8     1 3  
11 1           3   4   8
  10 5 6 1     7 11      
12 3       10   6     5  
          5     4      
Showing puzzle number: 4047
Puzzletype: Symmetrical Sudoku
Startnumbers: 52
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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