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Sudoku puzzles (Su Doku)

My database includes 17735 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.

372552 puzzles downloaded.

          7 8    
                5
      3     1    
    4           1
              3  
                2
  7   9   2      
    3     8      
                 
Showing puzzle number: 17318
Puzzletype: Optimal Sudoku
Startnumbers: 14
Difficulty: Very hard (0)
Solution methods: SiSo SC SB DS XW FI
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