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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.

1106237 puzzles downloaded.

  12     10         15       1 14  
    7   1         3 10       4 15
4     10 3 11         2 13     9 6
    6   5       12     4       11
                  5       9   14
  6 5       14 15 1     2   10    
13 1   2     8   3           12  
    15 14 4       11 13     2   8  
  10   15     13 1       9 6 7    
  14           11   4     8   5 1
    11   9     4 6 12       2 15  
5   8       3                  
10       14     5       1   15    
3 11     7 10         15 12 5     8
15 5       3 6         10   4    
  4 14       1         5     2  
Showing puzzle number: 2020
Puzzletype: Symmetrical Sudoku
Startnumbers: 94
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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