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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.

813422 puzzles downloaded.

  4       8    
6     5       4
    7 2 6      
  6 3         8
7         5 8  
      3 1 4    
4       8     3
    1       7  
Showing puzzle number: 243062
Puzzletype: Symmetrical Sudoku
Startnumbers: 22
Difficulty: Very hard (0)
Solution methods: SiSo SC SB NS
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