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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.

1153447 puzzles downloaded.

12   6   13         3 2   7   11  
10       11 14       16 15          
14     15   12       1   9 4   5 16
3                           8 2
4           5   3 13           8
      10   13 3 12           2 9  
      13   4     2           6  
1 9   2 16   14   8 7           5
6           11 14   8   7 10   2 3
  3           15     6   11      
  14 1           10 9 3   5      
7           13 6   14           9
16 12                           15
9 15   3 14   16       7   12     6
          1 2       10 12       4
  2   1   10 15         16   7   14
Showing puzzle number: 1662
Puzzletype: Symmetrical Sudoku
Startnumbers: 92
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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