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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.

711214 puzzles downloaded.

9       3 7   11 4   12  
    2     6           8
  3       12   9 1   11  
      2   3            
6 7           10     8  
5 12   6                
                11   7 3
  9     10           6 2
            1   7      
  2   8 12   4       1  
12           11     8    
  4   3 7   12 8       6
Showing puzzle number: 372
Puzzletype: Symmetrical Sudoku
Startnumbers: 46
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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