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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.

853225 puzzles downloaded.

  5     4      
  2   8     1 6
    6         4
5         8 3  
  6 7         8
8         4    
6 4     8   2  
      2     4  
Showing puzzle number: 202361
Puzzletype: Symmetrical Sudoku
Startnumbers: 22
Difficulty: Very hard (0)
Solution methods: SiSo SC SB XW NS FI
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