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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.

520232 puzzles downloaded.

    1   4         6   5
  6 8 7     11 4   1    
      6         8     11
11 5         9   6 8   10
      3                
    2     1           4
7           12     2    
                5      
12   11 10   4         8 6
6     2         12      
    6   3 5     4 12 2  
9   3         11   4    
Showing puzzle number: 774
Puzzletype: Symmetrical Sudoku
Startnumbers: 46
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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