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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.

    8     2     9   7  
1 9 5       10 6        
      12   7     4     3
2       6 9     1     5
            1   12 4    
4             5 8 7   9
7   1 3 2             10
    9 4   8            
5     6     3 7       12
8     1     5   3      
        4 1       11 12 6
  10   2     7     8    
Showing puzzle number: 1536
Puzzletype: Symmetrical Sudoku
Startnumbers: 52
Difficulty: Very easy (0)
Solution methods: SiSo SC
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