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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.

695469 puzzles downloaded.

6 7         4 2     5 1
    5     6       10    
        4     6        
5     8     11 9        
  2             8   9 10
1   2                 11
7                 2   4
12 9   11             2  
        5 10     11     6
        6     8        
    4       6     12    
10 5     9 11         4 2
Showing puzzle number: 495
Puzzletype: Symmetrical Sudoku
Startnumbers: 44
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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