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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.

528305 puzzles downloaded.

      8 1              
4       6     12       9
  5   11       7   3   2
  10   7         6 8    
    9     4 8 6     12  
10           3 4   6 7  
  6 5   2 11           10
  12     4 2 5     9    
    7 1         12   9  
12   1   11       2   3  
2       3     8       7
              1 4      
Showing puzzle number: 529
Puzzletype: Symmetrical Sudoku
Startnumbers: 50
Difficulty: Very easy (0)
Solution methods: SiSo SC
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