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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.

938512 puzzles downloaded.

  1     2     14 9     4   16   3
9       7     8         6      
    15   1         2 6   10     4
8         12 10   7       14 5 15  
  3   7             11         15
10   9   13 11           8       2
  12 16 6   7       5       14    
  8             1   9 10     6  
  14     11 15   9             3  
    3       7       5   9 1 16  
12       16           2 1   10   14
2         8             11   7  
  9 4 11       6   10 7         8
7     10   9 11         2   4    
      3         8     16       10
6   14   3     4 13     9     5  
Showing puzzle number: 2114
Puzzletype: Symmetrical Sudoku
Startnumbers: 90
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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