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Sudoku puzzles diagonals (Su Doku)

My database includes 5816 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every 4x4 box contains the digits 1 through 16. The diagonals must also contain 1 through 16. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

1153565 puzzles downloaded.

  12     1           6          
3 4 7   6 9     14 2 5 13 8      
    6 1 8 3 15   11   10   16 13 9 5
11         13 14       1 15   3 4  
      7           3   12 9      
      11         6       7      
14       4 11   9 13              
    1         3 4   11     8    
    12     16   7 1         15    
              10 9   16 2       4
      10       8         14      
      16 15   13           5      
  10 5   13 8       11 14         6
13 6 8 9   14   1   5 4 3 12 7    
      12 3 7 2 11     8 9   5 16 13
          12           10     3  
Showing puzzle number: 2665
Puzzletype: Symmetrical Sudoku
Startnumbers: 96
Difficulty: Super easy (0)
Solution methods: SiSo
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