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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.

499468 puzzles downloaded.

4     10       5   3 7  
        2 4   9     5 1
  10         4 2        
5   4       12 1       11
    7         3     6 12
      8       11     10  
  11     1       3      
6 4     12         7    
8       3 7       4   2
        9 12         11  
12 9     10   11 6        
  7 11   6       5     10
Showing puzzle number: 50
Puzzletype: Symmetrical Sudoku
Startnumbers: 50
Difficulty: Very easy (0)
Solution methods: SiSo SC
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