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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.

2181128 puzzles downloaded.

  5 1       8     3    
      2 1       12     8
      11 10     6 2 1 9  
  4         5 8     3 9
          11     10     2
      1   7       8 11  
  2 5       4   8      
10     7     12          
12 11     5 1         10  
  10 6 4 11     5 9      
5     9       10 4      
    11     4       2 7  
Showing puzzle number: 7976
Puzzletype: Symmetrical Sudoku
Startnumbers: 52
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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