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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.

2270641 puzzles downloaded.

    11   2 5 6 4 1   3  
5                 12   9
10 1 3       9          
    6     4 2   5      
  4 5   11         1 8  
      8 5           4  
  9           8 12      
  5 2         11   10 6  
      10   12 3     5    
          8       11 7 6
8   12                 4
  6   2 4 9 11 5   8    
Showing puzzle number: 2024
Puzzletype: Symmetrical Sudoku
Startnumbers: 52
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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