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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.

584147 puzzles downloaded.

3 9   16       14 4     6 8     11
15 12     10             2     16  
      6     7     14 12 3        
          9 6 5 7 13       14   4
13 5   11                 16 3 7  
    16 9   7   12     2 10        
12     15       8   7 9     1    
      1     5             12 15  
  16 11             3     10      
    15     12 4   10       13     3
        6 8     9   15   1 4    
  14 8 10                 15   6 12
16   9       3 1 8 2 11          
        14 5 9     10     7      
  15     4             12     11 8
1     13 8     11 14       3   5 10
Showing puzzle number: 142
Puzzletype: Symmetrical Sudoku
Startnumbers: 94
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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