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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.

1280661 puzzles downloaded.

7     2       4       3
9     1             2  
  6   3 9 1   8       4
  4   11     10          
    8       1     9   2
6   2   8   11     4    
    11     9   2   7   8
5   9     3       12    
          12     10   1  
8       5   4 1 2   11  
  5             12     1
11       10       9     7
Showing puzzle number: 450
Puzzletype: Symmetrical Sudoku
Startnumbers: 50
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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