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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.

  15   12     9     5   8   7    
          11   12 10   2     15   1
8       6       7   12 1   2   5
  3 6     7       15       16    
                          9 13  
  2         5   1 16         11  
  13   1 15   3   2   6 9 7   16  
6   10     8         5 11     2  
  5     3 1         13     12   2
  10   13 9 12   15   8   5 6   4  
  12         13 16   6         3  
  1 3                          
    5       8       10     13 9  
3   1   12 10   4       13       8
13   14     9   5 12   3          
    7   16   6     2     10   5  
Showing puzzle number: 4297
Puzzletype: Symmetrical Sudoku
Startnumbers: 92
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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