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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.

847376 puzzles downloaded.

7             8
    1   4   2  
    5   6      
  4     8     3
3     6     7  
      2   6    
  7   3   8    
8             5
Showing puzzle number: 14590
Puzzletype: Symmetrical Sudoku
Startnumbers: 20
Difficulty: Very hard (0)
Solution methods: SiSo SC FI
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