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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.

2306451 puzzles downloaded.

9   5   10   8     2 6  
          6     9     5
1   12 10   3 2 9       8
5     12   8   10        
4             3     7  
              2 8 4   12
6   11 3 9              
  4     2             10
        1   12   11     6
12       3 4 6   10 9   7
11     9     10          
  10 2     5   12   11   3
Showing puzzle number: 5449
Puzzletype: Symmetrical Sudoku
Startnumbers: 54
Difficulty: Very easy (0)
Solution methods: SiSo SC
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