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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.

2239591 puzzles downloaded.

12 2       5   9 7     8
    10 8 4     2   11    
  9       7   10        
3     4     10          
    9             8 11 7
8     7 1           12  
  10           5 12     2
6 3 1             7    
          12     1     6
        3   5       7  
    11   8     12 5 4    
5     2 10   7       9 12
Showing puzzle number: 7043
Puzzletype: Symmetrical Sudoku
Startnumbers: 50
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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