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Sudoku puzzles (Su Doku)

My database includes 936 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every box contains the digits 1 through 9. The grey boxes is even numbers and the white boxes is odd. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

271102 puzzles downloaded.

                9
  5              
    2            
9       4   2    
  2 7       3 4  
    4   2       3
            8    
              9  
3                
Showing puzzle number: 220
Puzzletype: Symmetrical Sudoku
Startnumbers: 16
Difficulty: Very hard (0)
Solution methods: SiSo SC SB DS XW NS FI
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