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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.

665922 puzzles downloaded.

  8     4 6       10    
4     9   2         1  
5     7 12             11
11 12   3 1       2     4
  3     6       12      
9 5   8 3              
              3 4   8 6
      4       2     3  
10     2       11 3   6 1
12             7 9     10
  4         5   8     12
    5       2 6     11  
Showing puzzle number: 852
Puzzletype: Symmetrical Sudoku
Startnumbers: 50
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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