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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.

    7   2   12   11   4  
              10   12   2
  12     4 7 11         8
4     6       5     7 11
    3     11 10 4 6     5
        7       10 2   4
3   10 2       8        
1     12 6 5 3     10    
9 11     10       12     7
11         1 4 6     9  
12   5   8              
  1   10   2   7   4    
Showing puzzle number: 8293
Puzzletype: Symmetrical Sudoku
Startnumbers: 56
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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