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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.

1791485 puzzles downloaded.

5     7 3 4 1     6 11 12
    3           7   4 1
    12   5     7 10      
      12                
10   4   12 9 5       1 3
  5       7       12   10
4   9       10       6  
8 6       2 12 1   9   4
                2      
      5 1     3   2    
12 9   6           10    
1 8 2     10 9 12 4     6
Showing puzzle number: 3725
Puzzletype: Symmetrical Sudoku
Startnumbers: 56
Difficulty: Harder (0)
Solution methods: SiSo SC SB DC XW
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