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Sudoku puzzles (Su Doku)

My database includes 300320 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. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

812879 puzzles downloaded.

7 2   1        
  6 5 4   7    
              3
      7 8 4 5  
  4 7 3 5      
5              
    2   6 8 3  
        2   1 7
Showing puzzle number: 76777
Puzzletype: Symmetrical Sudoku
Startnumbers: 24
Difficulty: Very hard (0)
Solution methods: SiSo SC SB DC XW NS FI
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