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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.

15 12 14   3 7     5   13     6   1
          2 15       16       14  
7 2           13 3 6     4      
11 10       8 6     1   2 15 12    
2     10   16       4 12         11
          11     16 10         5 13
              10     1 6   9 12  
14       13 15 12       11          
          9       11 8 16       7
  13 16   10 4     2              
9 3         11 15     14          
10         13 14       3   12     9
    3 6 15   1     2 4       9 16
      13     7 4 15           1 14
  4       6       16 7          
16   9     5   12     10 1   4 15 8
Showing puzzle number: 2815
Puzzletype: Symmetrical Sudoku
Startnumbers: 96
Difficulty: Very easy (0)
Solution methods: SiSo SC
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