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Sudoku puzzles irregular (Su Doku)

My database includes 1031 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every box contains the digits 1 through 12. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

692005 puzzles downloaded.

  2 7 8   12         3  
8 6   5       7 10   4  
            2 3 7 11   10
  10 12   2   4     9   3
3   1       12   4      
5 3           10   4 7  
  8 4   5           11 6
      11   2       8   4
9   8     3   2   5 6  
2   6 9 8 5            
  5   6 1       3   12 8
  1         8   6 2 10  
Showing puzzle number: 678
Puzzletype: Symmetrical Sudoku
Startnumbers: 62
Difficulty: Super easy (0)
Solution methods: SiSo
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