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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.

2333808 puzzles downloaded.

    6 1 9 7   12       8
8           2     11   7
11       6     4        
  10   9   6   2   3    
  6   11 10           5  
3 2 8 7     5     12 10  
  9 10     4     3 8 7 5
  11           7 6   1  
    1   5   10   9   12  
        1     5       4
7   11     2           3
10       7   6 8 12 5    
Showing puzzle number: 9111
Puzzletype: Symmetrical Sudoku
Startnumbers: 58
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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