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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.

646773 puzzles downloaded.

7             10 4     12
        2   8     10    
      1         12 9   6
1     11   4 7     3   8
  1 3   11   6   8     9
      2 5   3   10   4  
  8   6   10   3 9      
6     3   9   1   11 10  
2   11     8 1   7     10
9   1 12         11      
    12     5   7        
3     9 7             4
Showing puzzle number: 994
Puzzletype: Symmetrical Sudoku
Startnumbers: 56
Difficulty: Super easy (0)
Solution methods: SiSo
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