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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.

756740 puzzles downloaded.

  2 12   3 5            
9       11 10         2  
6 5 7       3          
  11   8     1         7
                  7 12  
  10               5 9 2
11 3 2               10  
  4 9                  
2         11     7   8  
          9       10 7 3
  9         8 3       4
            9 12   2 1  
Showing puzzle number: 342
Puzzletype: Symmetrical Sudoku
Startnumbers: 44
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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