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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.

2300940 puzzles downloaded.

          8           3
11 10   3     12 9        
  9   12   6   4 1      
4       5   8   2     1
9             11   8    
  2 8         3   9 7 11
10 1 2   8         12 4  
    3   11             2
12     11   2   6       10
      8 9   7   5   1  
        4 10     9   12 6
3           5          
Showing puzzle number: 4080
Puzzletype: Symmetrical Sudoku
Startnumbers: 52
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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