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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.

  4       3     10 7    
      1   11       3    
11     3 5   1       2 6
    4     5 7 2   12   8
  9         10 6       7
2           9          
          4           12
3       10 9         1  
4   10   12 6 8     11    
6 12       1   10 7     9
    3       6   5      
    5 2     12       10  
Showing puzzle number: 8524
Puzzletype: Symmetrical Sudoku
Startnumbers: 50
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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