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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.

2     9   12   11   3   5
      3   4       8    
10 4 5           7      
      11       5        
4 10   1 12 11 7     5   9
5   12   2   10          
          6   7   10   8
9   11     3 8 10 12   5 4
        4       9      
      10           12 3 11
    8       6   5      
7   4   9   11   8     10
Showing puzzle number: 2924
Puzzletype: Symmetrical Sudoku
Startnumbers: 54
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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