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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.

745509 puzzles downloaded.

    6   2         8   5
10     4 5       9 11    
  3         12 2 6   10 7
  5 1   12 2            
7           5   10      
          7   10 8     6
1     3 11   8          
      7   10           4
            4 11   6 1  
3 6   5 9 12         7  
    10 2       5 4     8
11   3         9   12    
Showing puzzle number: 207
Puzzletype: Symmetrical Sudoku
Startnumbers: 52
Difficulty: Super easy (0)
Solution methods: SiSo
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