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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.

719906 puzzles downloaded.

  3       4   12       10
10     7   5   4 3   2  
  12 11   10           4 1
6   5 2       10   9   11
        1       6 8    
11     3       8     9  
  9     2       10     5
    1 6       5        
4   6   12       5 2   7
12 8           9   5 10  
  10   8 7   5   11     2
2       3   8       1  
Showing puzzle number: 455
Puzzletype: Symmetrical Sudoku
Startnumbers: 56
Difficulty: Super easy (0)
Solution methods: SiSo
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