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Sudoku puzzles irregular and disjoint groups (Su Doku)

My database includes 131 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 6. The cells with the same color must also contain the digits 1 through 9. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

148326 puzzles downloaded.

  2     3   7   1
    7           5
3           6 8  
5     8     2    
8       6       3
    4     3     8
  5 2           7
9           5    
7   6   4     2  
Showing puzzle number: 3
Puzzletype: Symmetrical Sudoku
Startnumbers: 27
Difficulty: Super easy (0)
Solution methods: SiSo
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