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Sudoku puzzles disjoint groups (Su Doku)

My database includes 41726 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every 2x4 box contains the digits 1 through 8. The cells with the same color must also contain the digits 1 through 8. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

117305 puzzles downloaded.

3   5     1 8  
      6        
              6
        7 3 1  
  2 7 8        
6              
        1      
  4 3     7   8
Showing puzzle number: 29956
Puzzletype: Symmetrical Sudoku
Startnumbers: 18
Difficulty: Super easy (0)
Solution methods: SiSo
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