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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.

1506316 puzzles downloaded.

  2     12         8    
11 1 9   7     8   2    
      12         4 9   7
6 4 11     2            
            11 1 7      
      5 4     10 2     8
12     1 6     4 5      
      8 9 1            
            12     6 7 1
4   12 7         11      
    6   1     5   7 10 3
    3         6     9  
Showing puzzle number: 7574
Puzzletype: Symmetrical Sudoku
Startnumbers: 50
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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