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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.

    4     2 12     11   1 14     6
      8 13   14 4   10            
  15           11   7 9     12   13
    7   8   6       15 12     4  
      7 14 9 1           12 5   10
  12     6 4         14       9  
4   15                   11 16   14
  14     10 8                 15  
  13                 11 4     1  
11   16 1                   14   9
  7       11         1 9     16  
15   5 2           16 12 13 7      
  2     5 12       15   3   1    
13   3     6 15   14           7  
            10   8 13   2 5      
10     12 3   16     9 7     11    
Showing puzzle number: 4996
Puzzletype: Symmetrical Sudoku
Startnumbers: 90
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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