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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   1   7   11 12 14   10 2  
2     1 3               5 7 4  
16         6 13 9       10   1   15
    3   14 4     2             12
14   13 16 1   9     5     8     7
    5       4   7   13 8       2
3                 15           14
  7   15     16           9 5 1  
  6 2 8           16     13   5  
10           2                 8
12       4 8   13   6       2    
11     7     10     8   2 12 4   6
13             2     15 7   6    
6   7   9       8 10 16         11
  11 10 9               13 2     3
  16 15   13 10 14   9   11   7      
Showing puzzle number: 5383
Puzzletype: Symmetrical Sudoku
Startnumbers: 98
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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