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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.

126922 puzzles downloaded.

6           5 1
    3          
4              
    2     3    
    4     1    
              6
          7    
2 4           5
Showing puzzle number: 41172
Puzzletype: Symmetrical Sudoku
Startnumbers: 14
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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