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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.

175646 puzzles downloaded.

      8        
5     3     6  
  4     2      
    3 5     1  
  2     7 8    
      1     4  
  6     5     3
        8      
Showing puzzle number: 22975
Puzzletype: Symmetrical Sudoku
Startnumbers: 18
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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