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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.

846756 puzzles downloaded.

    3   2 1 4  
4 1       3 7  
            2 4
  8           7
3           5  
5 4            
  3 4       8 1
  5 1 6   4    
Showing puzzle number: 142085
Puzzletype: Symmetrical Sudoku
Startnumbers: 24
Difficulty: Very hard (0)
Solution methods: SiSo SC SB DS NS
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