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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.

528732 puzzles downloaded.

10     5   1     9 8 3  
      9     3          
  1 9         11       12
4           7 1   9    
  8 5                  
      3 12   11 6       1
11       4 8   12 5      
                  5 10  
    1   10 4           3
12       9         2 7  
          11     12      
  11 3 7     8   10     6
Showing puzzle number: 754
Puzzletype: Symmetrical Sudoku
Startnumbers: 46
Difficulty: Very easy (0)
Solution methods: SiSo SC
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