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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.

756740 puzzles downloaded.

          8       11    
4           11   2     9
          9   5 12 1   4
          4   9 3 2 6 8
  2 11       10 1   7 5 3
        4   6         2
11         6   2        
5 6 9   1 10       4 3  
12 10 1 8 5   9          
2   10 3 11   7          
3     7   11           10
    6       8          
Showing puzzle number: 153
Puzzletype: Symmetrical Sudoku
Startnumbers: 54
Difficulty: Super easy (0)
Solution methods: SiSo
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